Trunk

Trunk (pronounced truhngk)

(1) The main stem of a tree, as distinct from the branches (limbs) and roots (also as bole; tree trunk).

(2) Of, relating to or noting a main channel or line, as of a railroad, waterway or something which assumes a similar shape (topographically).

(3) A large, sturdy box or chest for holding or transporting clothes, personal effects or other articles.  Such trunks usually have a hinged (sometimes domed) lid and handles at each end, provided because such is the size & weight, it takes at least two to carry one when loaded.

(4) A compartment, most often in the rear coachwork of an automobile, in which luggage, a spare tire, and other articles may be kept (a “boot” in the UK and certain other places in the English-speaking world and a “dicky” in India and elsewhere in South Asia).

(5) A storage compartment fitted behind the seat of a motorcycle and known also as a top-ox or top-case (as distinct from a “pannier” or “saddlebag” which is fitted at the side (usually in pairs), below the level of the seat).

(6) In anatomy, the body of a person or an animal excluding the head and limbs (the torso).

(7) In pathology, the main body of an artery, nerve, or the like, as distinct from its branches.

(8) In ichthyology, that part of a fish between the head and anus.

(9) In engineering and architecture, a name for a conduit, shaft, duct, channel or chute etc, used variously for airflow (thermal or blown), water, coal, grain etc.

(10) In steam engines, a large pipe forming the piston rod of a steam engine, of sufficient diameter to allow one end of the connecting rod to be attached to the crank, and the other end to pass within the pipe directly to the piston, thus making the engine more compact.

(11) In extractive mining, a flume or sluice in which ores are separated from the slimes in which they are contained.

(12) In architecture, the dado or die of a pedestal.

(13) In architecture, the part of a pilaster between the base and capital, corresponding to the shaft of a column.

(14) In hydrology, the main channel, artery or line in a river, railroad, highway, canal or other tributary system.

(15) In telephony, a telephone line or channel between two central offices or switching devices that is used in providing telephone connections between subscribers generally (also called a “tie-line”).

(16) In telegraphy, a telegraph line or channel between two main or central offices.

(17) In telecommunications, to provide simultaneous network access to multiple clients by sharing a set of circuits, carriers, channels or frequencies.

(18) In clothing, brief shorts (loose-fitting or tight) worn by men chiefly for boxing, swimming and athletics (some historically known as “trunk hose”.

(19) In zoology, the elongated prehensile, flexible, cylindrical nasal appendage of the elephant and certain other creatures (the proboscis).

(20) In nautical use, a large enclosed passage through the decks or bulkheads of a vessel, used as air ducting for purposes of heating, cooling, ventilation and such.

(21) In shipbuilding, any of various watertight casings in a vessel, as the vertical one above the slot for a centerboard in the bottom of a boat.

(22) A long tube through which pellets of clay, peas etc are driven by the force of the breath; a peashooter (archaic).

(23) In software engineering, the most current source tree, from which the latest unstable builds (so-called “trunk builds”) are compiled.

1400–1450: From the late Middle English tronke & trunke, from the Old French tronc (alms box, tree trunk, headless body), from the Latin truncus (stem, a stock, lopped tree trunk), a noun use of the adjective truncus (lopped; cut off, maimed, mutilated), (the later related to the English truncated).  Trunk & trunking are nouns & verbs, trunkful is a noun, trunked is a verb & adjective and trunkless is an adjective; the noun plural is trunks.

There are a myriad of “truck” terms in human pathology and other derived phrases include “elephant's trunk” (rhyming slang for “drunk”), “hand trunk” (a piece of luggage smaller than the traditional trunk and able to be carried by one), “junk in one's trunk” (corpulence of the buttocks, the alternative forms being “dump truck” or the vernacular “fat ass”), “the apple does not fall far from the trunk” (a variant of “the apple/pear etc does not fall far from the tree”) (children tend in appearance & characteristics to resemble their parents), “trunklid” (literally obviously “the lid of a trunk” and used of the opening panel which provides access to a car’s trunk), “bootlid” the UK equivalent and confusingly in the US used also as “decklid” on the basis of the trunk being a part of a car’s “rear deck”), “trunk novel” (a novel abandoned by the author while still a project), “trunk or treat” (an organized alternative to trick-or-treating where candy is handed out to children from cars in a parking lot; it was introduced as a child safety measure), “trunk show” (an event in which vendors present merchandise directly to store personnel or customers at a retail location or other venue, based on the idea of selling “out of a trunk”), “trunk sale” (and event at which goods are displayed for sale in the trunks of cars), “boot sale” the companion term)), “trunking” (travelling sitting in the trunk of a car”), and “trunk shot” (in film-making, a cinematic shot from within a car trunk (although there was a case of a serial killer who shot his victims while concealed in the trunk of a car.

Louis Vuitton Trunk #5 (left) and Louis Vuitton Trunk on Fire (right) by Tyler Shields (b 1982).

The original idea of a trunk being a “box; case etc” may lie in the first such “trunks” being hollowed-out tree trunks although some suggest the post-classical development of the meaning “box, case with a lid or top” was based on the notion of human body’s trunk being a “case” in which the organs were transported.  The modern idea of a “luggage compartment of a motor vehicle” dates from circa 1930, about the time trunks cease to be something separately carried and replaced by and space for luggage integrated into the bodywork.  The use of trunk had long been familiar in the medical literature (both of the torso and blood vessels etc) and the idea was by 1843 extended to railroad trunk lines and telephone networks by 1889.  “Trunk-hose” were first sold in the 1630s and seems to have been a kind of thermal underwear, the description a reference to them covering the whole torso (ie, the trunk) as opposed to most “hose” which was for the lower limbs.

The use of trunk to describe the “long snout of an elephant (or other beast with a similar appendage)” appeared first in the 1560s but etymologists are divided on whether it was an allusion to a tree’s trunk or has some connection with “trumpet”, based on the loud sound elephants are able to generate although the evidence does suggest the early use as a reference to the thing’s ability to hold water.  Predictably, by the early eighteenth century, it was a slang term for the human nose.  The use in clothing (always in the plural as “trunks”) emerged in the mid 1820s and initially described “short breeches of thin material”; it was a use of trunk in the sense of “torso”.  Use began in theatrical jargon but, as was not uncommon, soon it was applied to breeches generally, especially in US English and for the short, tight-fitting breeches worn by swimmers and other sporting types, adoption was close to universal by the 1890s.  “Swimming trunks” has survived as a regionalism; even within the one country, there are often several different names for what is one of humanity’s most simple garments.

Trump Trunks: MAGA (Make America Great Again) swimming trunks.  Trump trunks are made from a “silky, breathable, 4-way stretch mesh fabric” and features include (1) a small internal pocket, (2) a built-in anti-chafe liner.  The country of manufacture is not disclosed.  Clearly, the DNC (Democratic National Committee) in 2016 missed an opportunity by failing to release the "Crooked Hillary Clinton Bikini".

One linguistic curiosity was “subscriber trunk dialing” (later changed to “subscriber toll dialing” which later still switched to DDD (Direct Distance Dialing).  The “other” use of STD was as “sexually transmitted disease”, previously known as VD (venereal disease) and it wasn’t until the 1970s the initialism VD began to be replaced by STD (VD thought to have to have gained too many specific associations) but fortunately for AT&T, in 1951 they renamed their STD service (for long-distance phone calls) to DDD, apparently for no better reason than the alliterative appeal although it's possible they just wanted to avoid mentioning “toll” with all that implies.  Many countries in the English-speaking world continued to use STD for the phone calls, even after the public health specialists had re-purposed the initialization.  In clinical use, STI “Sexually Transmitted Infection” seems now the preferred term).

The evolution of the trunk: 1851 Concord stagecoach on display at the Smithsonian's National Postal Museum, Washington DC (left) with truck strapped to the back, additional trunks carried on the roof; 1928 Mercedes-Benz Nürburg 460 K Pullman Limousine (W08, centre left) with separate trunk still carried on a rear frame; 1936 Studebaker Dictator 4-door sedan (centre right) with the trunk now an integrated part of the bodywork; The US full-sized cars of the era had most capacious trunks but few could match Leyland Australia's infamous P76 (1973-1975, right) which effortlessly could carry a 44 (imperial) gallon (209 litre) drum.

The compartment which is most located in the rear coachwork of an automobile is used for luggage and historically also the spare tyre a toolkit (neither now not always supplied).  In North American use, this is called a “trunk”, an inheritance from the time when the passengers’ trunks (ie, in the sense of the box-like suitcases) were strapped on to an extension at the back of horse-drawn carriages.  In the early automobiles, the practice continued (often with lined wicker baskets because they were of lightweight construction) and when these were integrated into the bodywork, the space provided continued to be called “the trunk”.  The British called the same thing a “boot”.  In horse-drawn carriages in the UK, a “boot” was a compartment used to store travel essentials, among which (in an age of rutted, poorly maintained roads) included boots, the male passengers sometimes required to push the coach when it became stuck in mud, the frequent inclusion of a “boot box” or “boot locker”, made typically of leather and attached at the rear.  The other suggested origin is the French boute (compartment; box).  The term “boot” thus spread throughout the British Empire although, under the Raj, in India & Ceylon (later Sri Lanka) it became the “dickie”.  That was based on the dicky seat (also as “dickie seat” & “dickey seat” and later more commonly known as the “rumble seat”), an upholstered bench mounted at the rear of a coach, carriage or early motorcar and as the car industry evolved and coachwork became more elaborate, increasingly they folded into the body.  The size varied but generally they were designed to accommodate one or two adults although the photographic evidence suggests they could be used also to seat half-a-dozen or more children.  Why it was called a dicky seat is unknown (the word dates from 1801 and most speculation is in some way related to the English class system) but when fitted on horse-drawn carriages it was always understood to mean “a boot (box or receptacle covered with leather at either end of a coach, the use based on the footwear) with a seat above it for servants”.  Under the Raj, “dickie” was preferred while the colloquial “mother-in-law seat” was at least trans-Atlantic and probably global.

Lindsay Lohan illustrates how there are trunks and there are frunks:  The rear-engined Porsche 911 Carrera (997, 2004-2013) cabriolet (Los Angeles, 2012, right) has a frunk while the front-engined Mercedes-Benz SL 550 (R230, 2001-2011) (Los Angeles, 2009, left) has a trunk.  The R230 range was unusual because of the quirk of the SL 550 (2006-2011), a designation used exclusively in the North American market, the RoW (rest of the world) cars retaining the SL 500 badge even though both used the 5.5 litre (333 cubic inch) V8 (M273).

The Fiat X1/9 (produced by Fiat 1972–1982 and Bertone from 1982–1989, centre) featured both a frunk (left) and a trunk (right.

Most cars built have had the engine mounted in the front, thus most trunks appeared in the rear bodywork.  There have however been cars with engines behind the driver (such things were quite numerous until well into the 1970s) and these usually had a storage compartment at the front (where the engine otherwise would sit, under the hood (bonnet)).  Until the early years of the twentieth century, these seem just to have been called a “trunk” or “boot” but as electric vehicles began to appear in volume “frunk” (the construct being f(ront) + (t)runk) and the less popular “froot” (the construct being fr(ont) + (b)oot)) came into use.  There have been mid-engined cars which have both a trunk and a frunk and those in the diminutive Fiat X1/9 were surprisingly large while others (such as Ferrari's Dino 308 GT4 (1973-1980) & 208 GT4 (1975-1980), both badged as Ferraris after 1976) were of a less generous capacity, the frunk in the Dinos most suited to storing something the size of a topless bikini but it was a genuine four-seater (2+2), something not often attempted with the mid-engined configuration.