Tube

Tube (pronounced toob or tyoob)

(1) A hollow (usually cylindrical or oval) body of metal, glass, rubber or other material, used especially for conveying or containing liquids or gases.

(2) A small, collapsible, cylinder of metal or plastic sealed at one end and having a capped opening at the other from which paint, toothpaste, or some other semi-fluid substance may be squeezed or pumped.

(3) In anatomy & zoology, any hollow, cylindrical vessel or organ:

(4) In botany, the lower part of a gamopetalous corolla or gamosepalous calyx, below the lobes but used generally of any other hollow structure in a plant

(5) As “inner tube” a rubber, synthetic or composite construction in the form of a torus (doughnut-shaped) which sits inside the tyres of bicycles, motorcycles and certain other vehicles for the purpose of sustaining inflation (now rare on passenger vehicles which tend to use “tubeless” tyres.

(6) In semi-formal use (originally UK colloquial but now trademarked), the London RTS (rapid transit system) railway system (should use initial upper case).  The name comes from the tube-like tunnels drilled for most on the original underground sections but “The Tube” is used of the whole network (which does extend beyond London) including the above-ground sectors.  “Tube” is used variously of (1) the service, (2) of the cylindrical tunnels and (3) the rolling stock (the trains and carriages).  The term is also used in other places to describe underground railways.

(7) In electronics as “electron tube” (clipped usually to “tube”); as the “vacuum tube”, the predecessor of the transistor.

(8) In materials, as “nanotube”, small carbon constructions some 50,000 times smaller than the diameter of a human hair.

(9) In fashion variously as (1) “tube top” (a tight-fitting, sleeveless garment extening from the armpits to the waist or hips, (2) “boob tube” a shorter type of tube top which covers only the breasts (often labeled as “bandeau tube top”) and (3) “tube skirt” (a close fitting skirt which differs from the similar “pencil skirt” which is tapered).

(10) In slang, a television set (also used as “boob tube” with “boob” used in the sense of “someone stupid or foolish”, an allusion either to the inanity of much of what was broadcast or slur upon the audience).  Historically, television screens (like pre-modern computer monitors) used a “cathode-ray tube” and this was the original source of the idea of televisions as “on the tube”.

(11) In the slang of surfers, the curled hollow space formed when a cresting wave pitches forward when breaking.

(12) In the slang of clinical medicine, to intubate.

(13) In Australian Slang, a can of beer.

(14) In slang, a telescope (now rare and used usually as a deliberate archaism).

(15) To furnish with a tube or tubes.

(16) To convey or enclose in a tube.

(17) To form or render into the shape of a tube; to make tubular.

1590-1600: From the Middle French tube, from the Latin tubus (tube, pipe), related to tuba (long trumpet; war-trumpet), of obscure origin, but possibly connected to tībia (shinbone, reed-pipe).  The idiomatic for “down the tube(s)” (into a ruined, wasted, or abandoned state or condition; lost, finished) dates from the early 1960s and carries the same meaning as “down the drain”.  Despite the similarity of the words and the shapes of the structures, etymologists believe tub (open vessel used for liquids or other substances) was unrelated to tube.  Tub was from the late fourteenth century Middle English tubbe & tobbe, from a continental Germanic source such as the Middle Dutch tubbe, the Middle Low German tubbe & tobbe or the Middle Flemish tubbe, all of uncertain origin.  Tube, tubage & tubing are nouns & verbs, tubulure is a noun, tubed is a verb, tubular, tubey, tubiform, tubesque, tubeless, tubelike, tubish, tuboid & tuboidal are adjectives; the noun plural is tubes.

Squeezed from a tube: The toothpaste one squeezes onto a toothbrush is called a "nurdle".

The original use in the 1590s was of the observed structures in anatomy and zoology (a hollow organ or passage in the body) and this was extended by the 1650s to mean “pipe or hollow cylinder” (especially a small one used as a conduit for liquids).  The use to describe a “sealed container in tubular form” began in 1859 with the vacuum tube, later extended in electronics to a sealed tube containing electrodes (in wide use until the 1950s when transistors achieved mass-production).  The use to describe televisions dates from 1959 and seems to have been as clipping of “cathode ray tube” (CRT, the technology use of pre-modern screens) or “picture tube”.  “The Tube” was also late nineteenth century for wired telephones, the use derived from ships where voice traffic between places was sometimes carried by “speaking tube”, the same technology also used in horse-drawn carriages and early motor vehicles where the passenger compartment was sealed and separated from the drive or chauffeur.  In limousines (with a glass partition or divider), speaking-tubes were still sometimes fitted as late as the 1960s because it was simple, reliable technology and over such short distances an electronic apparatus offer little advantage.  London’s underground railway (an early London RTS (rapid transit system)) came to be known as “the Tube” in 1847, based on the tubular tunnels drilled to created the network; in 1900, in the press, it was dubbed the “Twopenny Tube” (a reference to the basic fare).  “Tube” has come to be a slang for RTS systems in various places, even those with no tubular tunnels (a similar linguistic process to “wire” or “cable” for electronic transmission).

Tube maps (sort of):  The London Underground maps, 1908 (left), 1933 (centre) and 2014 (right).

Although referred to almost universally as the “London Underground Map”, pedants like to point out (1) it’s a schematic (or diagram) rather than a map and (2) over half the “Underground” is above ground.  The now familiar concept of the “map” was in 1931 devised by Henry Beck (1902–1974), then a 29 year old electrical draftsman, who envisaged the rail lines as wires, the stations as connectors and the whole network as an integrated and interconnected diagrammatic system, much like the electrical circuit boards he was accustomed to drawing.  What was revolutionary about Mr Beck’s concept was he understood the purpose was different from a conventional map where scale mattered, rail lines had to be drawn in exactly the shape the assumed and topographic features were included.  What people wanted in a map of “The Tube” was a navigation aid, something which made as simple as possible the task of working out the matter of getting from station-to-station. 

The verb “to tube” (receive, enclose, or dispatch in a (pneumatic) tube) was in use by at least 1870 and was a clipping of pneumatic-dispatch tube (PDT), tubes first installed in 1859 in buildings for the rapid delivery of documents between floors or offices and propelled by air pressure; for dispatch, the documents were rolled and inserted in a small cylinder, the external diameter of which was slightly less than the internal diameter of the tube infrastructure.  The noun tubage (insertion of a tube into a cavity or canal) dates from 1880 and by 1896 it was being used as a collective nouns for tubes.  The adjective tubular (having the form of a tube or pipe) was from the Latin tubulus (a small pipe) and was in the early 1960s adopted in California’s surfing culture to describe the hollow, curling waves, most ideal for riding.

Lindsay Lohan in green-hooped tube top (left) and Coco Avenue's range of boob tubes in designer colors (right).

In pneumatic tyres, although still common on bicycles and motor-bikes, inner tubes are now rare in passenger vehicle use but they are still produced for a variety of commercial application and they have been re-purposed for the recreational pastime of “tubing” (riding on the inflated inner tube of a large (truck, tractor etc) tyre), undertaken both as a water-sport and on ski-slopes.  The jocular slang noun “tube-steak” emerged in 1962 to described “a frankfurter” (ie hotdog sausage), the term obviously a reference to the shape and given that, it’s remarkable it seems not to have been used as a slang for “penis” until the mid-1980s.  The test-tube (cylinder of thin glass closed in rounded form at one end) was so named in 1909 because it was used to test the properties of liquids.  Surprisingly, “test-tube baby” predates by decades modern IVF (In vitro fertilization) and was first used in 1935 in reference to artificial insemination.  In the 1980s, “test tube baby” became the popular descriptor of IVF, “test tube” used as a synecdoche of the process rather than any suggestion of the use of the glass receptacles.  The name “tube-top” (a women's close-fitting elastic top) made its debut in 1972 (although the style had been seen before); the “tube skirt” appeared the next season (again, a re-labeling) while the first “boob tubes” (a truncated version of the “tube top” which wraps only around the breasts) were advertized in 1977.  Being elasticized, some wear boob tubes without a bra but they're available also with a "built-in" bra (like all forms of structural engineering, physics does limit what's possible) and some are made with a thicker material so a strapless bra unobtrusively can be worn underneath.  

YouTube content.  

YouTube is a US social media and online video sharing platform now owned by Google.  It first appeared in 2005 and is now the planet's second most visited internet site, only Google search generating more traffic (as expressed in volumes of unique visits per day).  YouTube was emblematic of the way the internet evolved in a manner somewhat different to that futurists had in preceding decades predicted.  Although it was clear it would be an inter-connected world of databases with content from “content providers” available for download, few predicted the extent to which the terms “viewer”, “user” and “content provider” would overlap; the upload phenomenon generally was not predicted.  Substantially, this was technologically deterministic: with a high percentage of the world’s population carrying cameras able to produce HD (high definition) photographs and films which easily can be uploaded to a global distribution platform at only marginal cost, a new industry emerged and others were disrupted or destroyed.

OSCA S187 (750S, the tubo di dentifricio).  The Italians dubbed these tubo di dentifricio (toothpaste tube), illustrating yet again why everything sounds better in Italian.

In 1937, facing bankruptcy, the three surviving Maserati brothers (Bindo (1883-1980), Ettore (1894-1990) & Ernesto (1898-1975)) sold their eponymous company to the Orsi Group in Modena, the arrangement including a decade-long consultancy for the trio.  It’s not known if there was “no compete” clause in place but the brothers waited until 1947 when the contract expired before returning to San Lazzaro di Savena (near Bologna) where they founded Officine Specializzate per la Costruzione Automobili Fratelli Maserati S.p.A. (O.S.C.A.), the intention being to build small runs of racing cars for customers and for more than a decade production continued.  Most of the machines built used small displacement engines to contest the various series for such things (then popular in Italy) although in 1951 there was a one-off, 4.5 litre (273 cubic inch) V12, soon rendered an orphan when the Formula One rules were changed. 

Accordingly, subsequent OSCAs were smaller and one of the most exquisite was the S187 which made its debut in 1956.  Built to contest the well-supported 750 cm³ (46 cubic inch) racing class, the name was derived from the displacement of each of the engine’s four cylinders, a convention used for years also by Ferrari.  The smallest engine O.S.C.A. ever made, it was of “square” configuration (the bore & stroke both 62 mm (2.44 inch)) with double overhead camshafts (DOHC) and a pair of twin-choke, side-draft Weber carburetors.  Modest the displacement may have been but the package generated an impressive 70 horsepower which, combined with low weight (a svelte 450 kg (990 lb)) and effective aerodynamics, delivered class-leading performance.  That was despite the S187 being a little heavier than had been envisaged because constraints in time & cash meant the planned multi-tubular space frame had to be abandoned, replaced with a more conventional ladder frame chassis.

OSCA 750S NART (North American Racing Team), one of four with a clamshell body.

The delicate aerodynamic body was by the coachbuilder Morelli and the S-187 (referred to usually as the 750S) was immediately successful, gaining a class victory at the 1956 Mille Miglia, followed the next year with a class win at the 12 Hours of Sebring.  Although in 1959 still competitive in the 750 cm³ class, the brothers produced a new cylinder head which raised the output by 5 horsepower which may sound slight but it was a 7% lift (it would be like adding some 30 hp to a 400 hp engine) and despite in competition being regularly run for sustained periods at the 7700 rpm redline, reliability continued to be outstanding and the 750S remained competitive until well into the 1960s.  Nineteen were built.

End of the line: 1963 OSCA 1600 GT2

Unfortunately, age caught up with the Maserati brothers and in 1963 they sold O.S.C.A. to Count Domenico Agusta (1907–1971) who, in 1945, founded the MV Agusta motorcycle company, a move necessitated by the post-war peace treaty which included a ban on Italian aircraft production which obviously rendered unviable the aviation business Costruzioni Aeronautiche Giovanni Agusta S.A. (formed in 1923 by Count Giovanni Agusta (1879–1927)).  The O.S.C.A. operation was closed in 1967.

Pylon

Pylon (pronounced pahy-lon)

(1) A marking post or tower for guiding aviators, much used in air-racing to mark turning points in a a prescribed course of flight.

(2) A relatively tall structure at the side of a gate, bridge, or avenue, marking an entrance or approach.

(3) A monumental tower forming the entrance to an ancient Egyptian temple, consisting either of a pair of tall quadrilateral masonry masses with sloping sides and a doorway between them or of one such mass pierced with a doorway.

(4) In electricity transmission, a steel tower or mast carrying high-tension lines, telephone wires, or other cables and lines (usually as power-pylon, electricity pylon or transmission tower).

(5) In architecture (1) a tall, tower-like structure (usually of steel or concrete) from which cables are strung to support other structures and (2) a lighting mast; a freestanding support for floodlights.

(6) In aeronautics, a streamlined, finlike structure used to attach engines, auxiliary fuel tanks, bombs, etc to an aircraft wing or fuselage.

(7) In modeling, as “pylon shot”, a pose in which a model stands with arms raised or extended outwards, resembling an electricity pylon.

(8) An alternative name for an obelisk.

(9) In aviation, a starting derrick for an aircraft (obsolete) and a tethering point for an dirigible (airship).

(10) In American football (gridiron), an orange marker designating one of the four corners of the field’s end zones.

(11) In the slang of artificial limb makers (1) a temporary artificial leg and (2) a rigid prosthesis for the lower leg.

(12) In literature, as "Pylon Poet" (usually in the plural as “the Pylons”), a group of British poets who during the 1930s included in their work many references to new & newish mechanical devices and other technological developments.

(13) In slang, a traffic cone.

1823: A learned borrowing from Ancient Greek πυλών (pulṓn; pylṓn) (gateway; gate tower), from pylē (gate, wing of a pair of double gates; an entrance, entrance into a country; mountain pass; narrow strait of water) of unknown origin but etymologists suspect it may be a technical term (from architecture or construction) from another language.  The first use was in archaeology to describe a “gateway to an Egyptian temple”, a direct adaptation of the original Greek.  In Western architecture, it’s believed the first “modern” pylons were the tall, upright structures installed at aerodromes to guide aviators and it was the appearance of these things which inspired the later use as “power pylon” (steel tower for high-tension wires over distance, use noted since 1923) and the word spread to any number of similar looking devices (even those on a small scale such as traffic cones).  Until then, in engineering and architecture, tall structures used to carry cables or in some way provide support (or even be mere decorative) were described as a “tower” or “obelisk” (such use continuing).  Pylon is a noun and pylonless, pylonlike, pylonesque & pylonish are adjectives; the noun plural is pylons.  Despite the fondness in engineering for such forms to emerge, the verbs pyloned & pyloning seem never to have been coined.

The Ancient Greek πυλών (pulṓn; pylṓn) was used of the grand architecture seen in the entrances to temples and the usual word for doors (and gates) rather more modest was θύρα (thýra).  It was a feminine noun and appears in various forms depending on the grammatical case (θύρα (nominative singular; a door), θύρας (genitive singular; of a door) & θύραι (nominative plural; doors).  Etymologists believe θύρα may have undergone phonological changes, adapting to Greek morphology and pronunciation patterns, while retaining its fundamental meaning tied to entryways or openings.  The word was from the primitive Indo-European dhur or dhwer (door; gateway) which was the source also of the Latin foris (door, entrance), the Sanskrit dvā́r (door, gate), the Old English duru (door) and the Old Norse dyrr (door).  Because of their functional role and symbolism as thresholds (ie transition, entry, protection), the door played a prominent part in linguistic as well as architectural evolution.

Temple of Isis, first pylon, north-eastern view.

The Ancient Greek πυλών (pulṓn; pylṓn) was the classical term for an Egyptian ceremonial gateway (bekhenet) used in temples from at least the Middle Kingdom to the Roman period (circa 2040 BC–AD 395) and anthropologists have concluded the intent was to symbolize the horizon.  The basic structure of a pylon consisted of two massive towers of rubble-filled masonry tapering upwards, surmounted by a cornice and linked in the centre by an elaborate doorway.  Ancient depictions of pylons show that the deep vertical recesses visible along the facades of surviving examples were intended for the mounting of flag staffs.

An “anchor pylon” is the one which forms the endpoint of a high-voltage and differs from other pylons in that it uses horizontal insulators, necessary when interfacing with other modes of power transmission and (owing to the inflexibility of the conductors), when significantly altering the direction of the pylon chain.  In large-scale display advertizing, a “pylon sign” is a tall sign supported by one or more poles and in the original industry jargon was something in what would now be called “portrait mode”; a sign in “landscape mode” being a “billboard”.  Not surprisingly, there are a number of mountains known as “Pylon Peak”.  The task of naming such geological features is part of the field of toponymy (in semantics the lexicological study of place names(a branch of onomastics)) and a specialist in such things is known as a toponymist.  The term toponomy was later borrowed by medicine where it was used of the nomenclature of anatomical regions. In aviation, the “pylon turn” is a flight maneuver in which an aircraft banks into a circular turn around a fixed point on the ground.

The Ancient Greek πυλών (pulṓn; pylṓn) was used of the grand architecture seen in the entrances to temples and the usual word for doors (and gates) rather more modest was θύρα (thýra).  It was a feminine noun and appears in various forms depending on the grammatical case (θύρα (nominative singular; a door), θύρας (genitive singular; of a door) & θύραι (nominative plural; doors).  Etymologists believe θύρα may have undergone phonological changes, adapting to Greek morphology and pronunciation patterns, while retaining its fundamental meaning tied to entryways or openings.  The word was from the primitive Indo-European dhur or dhwer (door; gateway) which was the source also of the Latin foris (door, entrance), the Sanskrit dvā́r (door, gate), the Old English duru (door) and the Old Norse dyrr (door).  Because of their functional role and symbolism as thresholds (ie transition, entry, protection), the door played a prominent part in linguistic as well as architectural evolution.

The plyon pose: Lindsay Lohan demonstrates some variations.

In modeling, the “pylon shot” is used to describe the pose in which a model stands with arms raised or extended outwards, resembling (at least vaguely) an electricity pylon, the appearance of which is anthropomorphic.  There are practical benefits for designers in that raising the arms permits a photographer to include more of a garment in the frame and this can be significant if there’s detailing which are at least partially concealed with the arms in their usual position.  Topless models also adopt variations of the pose because the anatomical affect of raising the arms also lifts and to some extent re-shapes the breasts, lending them temporarily a higher, a more pleasing aspect.

The Pylons

The so-called “pylon poets” (referred to usually as “the Pylons”) were a group who dominated British poetry during the 1930s, a time when the form assumed a greater cultural and intellectual significance than today.  The best known (and certainly among the most prolific) of the Pylons were Louis MacNeice (1907–1963), Stephen Spender (1909–1995), WH Auden (1907-1973) and Cecil Day-Lewis (1904–1972), their names sometimes conflated as “MacSpaunday”.  It was Spender’s poem The Pylons which inspired the nickname and it referenced the frequent references to the images of “industrial modernity”, drawn from new(ish) technology and the machinery of factories.  The intrusion of novel machinery and technology into a variety of fields is not unusual; in the age of steam the devices were used as similes when speculating about the operation of the human brain, just as the terminology of computers came to be used when the lexicon entered the public imagination.  Their method underlying the output of the pylons was influenced by the metaphysical poetry of John Donne (circa 1571-1631) whose use of “scientific” imagery was much admired by TS Eliot (1888–1965), the work of whom was acknowledged as influential by both Auden and Spender.  However, the 1930s were the years of the Great Depression and probably their most fertile source was Marxist materialism although, of the Pylons, historians tend to regard only Day-Lewis as one of the “useful idiots”.

The Pylons (1933) by Stephen Spender.

The secret of these hills was stone, and cottages
Of that stone made,
And crumbling roads
That turned on sudden hidden villages
 
Now over these small hills, they have built the concrete
That trails black wire
Pylons, those pillars
Bare like nude giant girls that have no secret.
 
The valley with its gilt and evening look
And the green chestnut
Of customary root,
Are mocked dry like the parched bed of a brook.
 
But far above and far as sight endures
Like whips of anger
With lightning's danger
There runs the quick perspective of the future.
 
This dwarfs our emerald country by its trek
So tall with prophecy
Dreaming of cities
Where often clouds shall lean their swan-white neck.

The term “useful idiot” is from political science and so associated with Lenin (Vladimir Ilyich Ulyanov (1870–1924; first leader of Soviet Russia 1917-1922 & USSR 1922-1924) that it's attributed to him but there's no evidence he ever spoke or wrote the words.  It became popular during the Cold War to describe pro-communist intellectuals and apologists in the West, the (probably retrospective) association with Lenin probably because had the useful idiots actually assisted achieving a communist revolution there, their usefulness outlived, he'd likely have had at least some of them shot as "trouble-makers".  Although it took many Western intellectuals decades to recant (some never quite managed) their support for the Soviet Union, the watershed was probably Comrade Khrushchev's (1894–1971; Soviet leader 1953-1964)  so called "Secret Speech" (On the Cult of Personality and Its Consequences) to the 20th Congress of the Communist Party of the Soviet Union on 25 February 1956 in which he provided a detailed critique of the rule of comrade Stalin (1878-1953; Soviet leader 1924-1953), especially the bloody purges of the late 1930s.

Some had however already refused to deny what had become obvious to all but avid denialists, and in 1949 a contribution by Spender appeared in The God that Failed, a collection of six essays in which the writers lay bare their sense of betrayal and disillusionment with communism because of the totalitarian state forged by comrade Stalin which was in so many ways just another form of fascism.  Spender was associated with the intellectual wing of left-wing politics during the 1930s and was briefly a member of the Communist Party but his attraction seems to have been motivated mostly by the Soviet Union’s promises of equality and its anti-fascist stance.  He quickly became disillusioned with the Soviet state, unable to reconcile its authoritarianism with his personal beliefs in freedom and individual rights, a critical stance differentiated him from figures like George Bernard Shaw (GBS; 1856-1950) and Sidney (1859–1947) & Beatrice Webb (1858–1943), the latter couple for some time definitely useful idiots.

The sort of sights which would have inspired Spender’s line “Bare like nude giant girls that have no secret”.

Louis MacNeice, was politically engaged during the 1930s but that was hardly something unusual among writers & intellectuals during that troubled decade.  Among the pylons he seems to have been the most sceptical about the tenets of communism and the nature of comrade Stalin’s state and no historians seem every to have listed him among the useful idiots, his views of the left as critical and nuanced as they were of the right.  What he most objected to was the tendency among idealistic & politically committed intellectuals to engage in a kind of reductionism which allowed them to present simplistic solutions to complex problems in a form which was little more than propaganda, a critique he explored in his poem Autumn Journal (1939) captures his doubts about political certainty and his disillusionment with simplistic solutions to complex problems.  Auden certainly wasn’t a “useful idiot” and while politically engaged and associated with several leftist intellectual circles during the 1930s, his sympathy for Marxism and anti-fascist causes were really not far removed from those share by even some mainstream figures and a capacity for self-reflection never deserted him.  Much was made of the time he spent in Spain during the Spanish Civil War (1936-1940) but he went as an observer and a propagandist rather than a combatant and what he saw made his disillusioned with the ideological rigidity and in-fighting among leftist factions and he made no secret of his distaste for Stalinist communists.  By the early 1940s, he was distancing himself from Marxism, the process much accelerated by his re-embrace of Christianity where, at least debatably, he discharged another form of useful idiocy, his disapproval of collectivist ideologies apparently not extending to the Church of England.

Profiles of some electricity pylons.  There a literally dozens of variations, the designs dictated by factors such as the ground environment, proximity to people, voltage requirements, weight to be carried, economics, expected climatic conditions and a myriad of other specifics.

Of the Pylons, Cecil Day-Lewis (who served as Poet Laureate of the UK 1968-1972) had the most active period engagement with communism and Marxist ideals and he was for a time politically aligned with the Soviet Union; it was a genuine ideological commitment.  During the 1930s, the true nature of the Soviet Union wasn’t generally known (or accepted) in the West and Day-Lewis admired the Soviet Union as an experiment in social and economic equality which he championed and it wasn’t until late in the decade he realized the ideals he had embraced had been betrayed; it was Great Purge and the Moscow Show-Trials which triggered his final disillusionment.  Day-Lewis later acknowledged the naivety and moral compromises of his earlier stance and came to argue poetry and art should not be subordinated to political ideology, a view formed by his understanding of the implications of propagandistic pieces of his younger years being exactly that.

Choke & Choker

Choke (pronounced chohk)

(1) To be unable to breathe because of obstruction of the windpipe (solid & semi-solid objects such as food or fumes or particles in the air which cause the throat to constrict); asphyxiate, strangle, suffocate, throttle.

(2) Full to the point of obstruction (usually as “choked with”); block up, bung up, clog, congest, jam, obstruct, stop up.

(3) In forestry, to seize a log, felled tree etc with a chain, cable, or the like, so as to facilitate removal.

(4) In engineering, any mechanism which, by narrowing or blocking a passage, regulates the flow of air, gas etc.

(5) In fluid mechanics (of a duct), to reach a condition of maximum flow-rate (immediately before the choke-point), due to the flow at the narrowest point of the duct becoming sonic.

(6) In electronics, an inductor having a relatively high impedance, used to prevent the passage of high frequencies or to smooth the output of a rectifier (also called the choke-coil.

(7) In combat sports (wrestling, karate etc), a type of hold (of the throat) which can result in strangulation.

(8) A constriction at the muzzle end of a shotgun barrel which varies the spread of the shot.

(9) To enrich the fuel mixture of an ICE (internal-combustion engine) by diminishing the air supply to the carburetor (a choke a specific component of a carburetor althouh the term is used loosely).

(10) To make or install a choke in a device.

(11) To stop by or as if by strangling or stifling:

(12) To stop by filling; obstruct; clog

(13) To suppress a feeling, emotion, etc (often as “choke up”, choke down” or “choke back”).

(14) In sport, to grip a bat, racket, club etc) farther than usual from the end of the handle (to shorten the grip).

(15) To suffer from or as from strangling or suffocating.

(16) To become obstructed, clogged, or otherwise stopped.

(17) To become too tense or nervous to perform well (used most often in competitive sport, specifically in the sense losing by performing badly at a critical point, when in a winning position).

(18) In slang, the inedible centre of the head of an artichoke.

1150–1200: From the Middle English choken & cheken, a variant of achoken & acheken, from the Old English ācēocian (to suffocate), from the Old English ċēoce & ċēace (jaw, cheek) and cognate with the Old Norse kōk (gullet) and the Icelandic kok (throat) & koka (to gulp).  The transitive verb emerged in the late thirteenth century and by the late 1300s was being used in the sense of “to stop the breath by preventing air from entering the windpipe”; “to make to suffocate, deprive of the power of drawing breath” and that was used of persons as well as swallowed objects.  In that. It was a shortened form of the twelfth century acheken, from Old English ācēocian, probably from the root of ċēoce & ċēace (the spelling ceoke was also used).  In the narrow technical sense “choking” has been the cause of death of a number of rock stars including the guitarist Jimi Hendrix (1942-1970), Led Zeppelin’s drummer John Bonham (1948-1980) and AC/DC’s vocalist Bon Scott (1946-1980) although in all cases the critical “inhalation of vomit” which induced them to choke to death was caused by substance abuse.  In the same vein, the singer Janis Joplin suffered a fatal head injury in a fall while affected by drugs and alcohol; all these deaths may be regarded as “death by misadventure”.  The alternative forms choak & choake are obsolete; chock is dialectal.  Choke is a noun & verb, chokage & choker are nouns, choking is a noun & verb, chokeable is an adjective and choked is a verb & adjective; the noun plural is chokes.

The intransitive verb dates from the early fifteenth century when it was used to mean “gasp for breath”, in line with the figurative use in agriculture & horticulture (the Biblical notion of weeds stifling the growth of useful plants a Biblical image).  The term “choked up” (overcome with emotion and unable to speak) seems first to have been documented in 1896, the use possibly related to the earlier use of the word (choke-pear (1530s), crab-apple (1610s), choke-cherry (1785)) of fruits with an untypical degree of astringency and it’s thought the botanical link inspired Dr Johnson (Samuel Johnson (1709-1784)) to define the figurative use as “any aspersion or sarcasm, by which another person is put to silence”.  The noun chokage emerged in the 1840s while the term chokehold (tight grip around a person's neck to restrict breathing) was first used in 1962. The idea of a “choke” in sport in the sense of “losing by performing badly at a critical point, when in a winning position” dates from 1907 and comes from baseball where it referred to a “clutch hitter” (the hitter at the plate upon whom winning depended) “choking up” and failing to perform; the phrase “to fail in the clutch” similar in meaning.

Interchangeable choke for shotgun.

Although (except in the odd, curious niche), rendered obsolete by fuel injection, the carburetor is a device which continues to exert a fascination in those with a fondness for mechanical intricacy and an inclination to tinker.  Carburetors are devices used on ICEs (internal combustion engine) to produce the mix of fuel (typically petrol (gas)) & air required for combustion and in mainstream use they lasted into the twenty-first century.  Most carburetor were fitted with a choke, an instrument controlled by the driver and what the choke did was provide an enriched mixture (ie more fuel, less air) to make starting easier from cold.  The term “choke” was already known in engineering but the most direct comparison was probably from ballistics, chokes (some types described as “adjustable chokes”) fitted to shotguns as early as 1875.  A shotgun’s choke is a device (or constriction) at the muzzle end of the barrel which controls the spread (or pattern) of the shot as it exits the barrel.  By altering the spread, chokes allow shooters to customize their gun's performance for different purposes (ie hunting, target shooting, home defense et al).  When a shotgun cartridge is discharged, the begin to spread out immediately upon leaving the barrel (in slang they’re sometimes called “scatter guns” and a choke modifies this spread by narrowing or widening the diameter of the barrel at the muzzle.  This affects the density and size of the shot pattern at different distances.

Pellet field streams using various chokes.

In the industry, the classification of chokes is determined by the extent to which they narrow the barrel and the most common types are: (1) Cylinder: these are not fitted with a choke and thus there’s no constriction; they’re most suitable for short-range shooting. (2) Improved Cylinder: These have a slight constriction, thereby offering a moderately wide spread suitable for short and medium range targets. (3) Modified: A variation of the Improved with more constriction, lengthening the effective range.  (4) Full: Thos provides a narrow bore, creating a tight pattern for long-range accuracy, (5) Extra full: As the name implies, an even smaller bore, popular for turkey hunting or precision shooting.  There are also (1) fixed chokes (integral with the barrel and thus unchangeable) and (2) interchangeable chokes which are detachable inserts a shooter can swap according to the shooting to be done.

1971 Chrysler Charger E38 (choke knob arrowed).

Confusingly, although it was almost always the case a choke would be part of a carburetor (cable activated by a control in the driver’s cabin), the word “choke” was also used of carburetors in a different context and potentially more confusingly still, when used thus, it was often synonymous (and sometimes used interchangeably) with “throat”, “barrel” and “venturi”.  In the now arcane world of carburetors inhabited by those familiar with the things, this casual use isn’t a problem because the four words are known to refer to different components, although even experts rarely dwell on the details: (1) The throat is the main passage (there can be as many as four in a single carburetor, not necessarily all of the same bore (although if there are four they are usually sized in pairs)) through which air flows and a throat encompasses the entire internal air pathway.  (2) The barrel is the cylindrical tube that houses the throat, venturi and in many cases the throttle valve; the barrel is the structural element through which the air and fuel are mixed and delivered.

Weber-style IDF twin choke downdraft carburettor with chrome ram tubes (left), pair of Weber 40 IDA triple barrel carburetors (centre) and Holley Dominator 4500 1150 CFM Square Bore four barrel carburetor with fitting kit.

In US use, “barrel” is the most common way of describing carburetors (two barrel, four barrel) and the standard abbreviation is “bbl”.  That seems inexplicable by the usual conventions of English but is a historic legacy from the petroleum industry where it was used to denote a barrel of oil.  The specification and paint scheme of early oil barrels were standardized by Standard Oil, and the abbreviation “bbl” became widely used to signify a “standardized blue barrel”, hence the apparently superfluous “b”; over time, “bbl”, became the universal shorthand for barrel, even outside the oil industry. (3) The venturi is a specific narrowing of a carburetor's throat or barrel, the primary purpose of which is to create a pressure drop due to the “venturi effect” (a phenomenon of fluid dynamics) in which as air flows through the narrowed section, its velocity increases and its pressure decreases (surface friction at this scale not significant).  The pressure drop induced by the venturi effect draws fuel from the fuel bowl into the air stream for mixing and atomization.  (4) Choke in this context is simply another way of saying “barrel” and the choice is dictated by local conventions of use; In Europe it was common to speak of a “two choke” carburetor whereas if used by a US manufacturer this would be a “two barrel”.  There was trans-Atlantic respect for this tradition and in both communities tend to use the correct terminology of each other’s devices although hot-rodders in the US did like slang such as the evocative “four-holer”.  Despite that, Ford did for a while muddy the waters by using the terms to 2V and 4V (ie 2 venturi & 4 venturi) to refer both to two & four barrel carburetors but also the two different cylinder heads designed for each.  People got used to that but it did latter induce confusion elsewhere when 2V & 4V came to be understood as “two valve” & “four valve” (ie per cylinder).

Model Tessa Fowler (b 1992) wearing fabric chokers.

Choker (pronounced choh-ker)

(1) In fashion, a piece of jewelry or ornamental fabric, worn as a necklace or neckerchief, snug around the throat (use based on the “choker chain” used to restrain dogs).

(2) One who, or that which, chokes or strangles.

(3) A person administering a choking device (depending on context, either a class or machine operator or a murderous strangler).

(4) A neckcloth or high collar.

(5) As choker chain, a dog collar designed to pinch or squeeze the dog or other animal when the leash is pulled.

(6) In forestry, a chain or cable used to haul logs to a transportation point.

(7) In slang, any disappointing or upsetting circumstance.

(8) In slang, the traditional clerical collar worn by Christian clergy.

(9) In slang, a cigarette.

(10) A person who pratices autoerotic asphyxiation or paraphilia, a practice where someone temporarily cuts off their own air supply by means of a ligature or some other sort of self-asphyxiation device during sex or masturbation.

(11) In sport, one who “chokes” (losing by performing badly at a critical point, when in a winning position).

1550s: The construct was choke + -er.  The –er suffix was from the Middle English –er & -ere, from the Old English -ere, from the Proto-Germanic -ārijaz, thought most likely to have been borrowed from the Latin –ārius where, as a suffix, it was used to form adjectives from nouns or numerals.  In English, the –er suffix, when added to a verb, created an agent noun: the person or thing that doing the action indicated by the root verb.   The use in English was reinforced by the synonymous but unrelated Old French –or & -eor (the Anglo-Norman variant -our), from the Latin -ātor & -tor, from the primitive Indo-European -tōr.  When appended to a noun, it created the noun denoting an occupation or describing the person whose occupation is the noun.  The noun emerged in the 1550s in the sense of “one who chokes” an agent noun from the verb and from 1848 it was used to mean “large neckerchief”.  The use to mean “a kind of necklace worn against the throat” dates from 1928.  Choker is a noun; the noun plural is chokers.

Lindsay Lohan with choker at Moschino Fashion Show, London, June 2014.  A choker is a decorative accessory worn around the neck and differs from a necklace in that it sits higher (typically mid-way up the neck) and fits snugly.

In fashion, choker is a clipping of “choker chain”, a dog collar designed to pinch or squeeze the dog or other animal when the leash is pulled.  Chokers can be for any material (fabric, leather (studded varieties popular), metal etc), and are sometimes adorned with jewels or logos.  There are also chokers with LED (light-emitting diodes) displays in a variety of colors which are powered by a small button-battery, rechargeable via a USB (universal serial bus) port.  According to a normally reliable source (Urban Dictionary), a choker is (1) a symbol used by emos to convey a desire to engage in self-harm or even suicide or (2) a way certain young ladies advertize their especial fondness for and skill in performing fellatio (this should be treated as a gaboso (Generalized Association Based On Single-Observation).  In the BDSM (Bondage, Discipline (or Dominance) & Submission (or Sadomasochism) community, chokers are sometimes used as the “submissive collar”, given by dominants as a symbol of possession and sometimes augmented with a leash for purpose of public display.

Anna Teshu (b 1994, right), in choker and on leash with ex-boyfriend Nathan Riely (b 1988. left) while role-playing as a dog and handler.  If consensual, the "leashed partner" thing is a kink and a genuine ALC (alternative lifestyle choice), albeit one which has attracted some criticism, some suggesting the "leashed" are suffering from "false consciousness", an idea explored in other contexts by both Karl Marx (1818-1883) and Sigmund Freud (1856-1939).