Pump

Pump (pronounced puhmp)

(1) An apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes.

(2) An instance of the action of a pump; one stroke of a pump; any action similar to pumping.

(3) In engineering or building trades, a shore having a jackscrew in its foot for adjusting the length or for bearing more firmly against the structure to be sustained.

(4) In the slang of the biological sciences, an animal organ that propels fluid through the body; the heart.

(5) In cell biology, a system that supplies energy for transport against a chemical gradient, as the sodium pump for the transfer of sodium and potassium ions across a cell membrane.

(6) To raise, drive or free from fluids by means of a pump.

(7) To inflate something with a gas or viscous substance and used analogously in other contexts.

(8) To operate or move by an up-and-down or back-and-forth action.

(9) Several types of shoe, with much variation in the way the description is applied.

(10) In bodybuilding and climbing, a swelling of the muscles caused by increased blood flow following high intensity weightlifting; a specific type of exercise routine offered by gyms; as “pump iron” a generalised phrase to refer to weight-lifting.

(11) In colloquial use, a ride on a bicycle given to a passenger, usually on the handlebars or carrier (rare).

(12) In US slang, the heart, (obsolete).

(13) In (vulgar) UK slang, the vagina (obsolete).

(14) In the slang of (pre-pandemic) social interaction, vigorously to shake a hand (often as "pumping the flesh").

(15) In slang, as “pump for information”, relentlessly to question.

(16) In the slang of computer programming, to pass messages to a program so it may respond.

(17) In cosmetic surgery or non-surgical beauty treatment, as "pumped up", a general term to describe body parts (lips, breasts etc) made plumper with some artificial substance or the redistribution of the body’s natural fat deposits.

(18) In ballistics, as “pump-action”, a design which permits the rapid loading a shell or cartridge from a magazine.

1400-1450:  From the Late Middle English pumpe, cognate with Middle Low German pumpe and Middle Dutch pompe (water conduit, pipe).  Later variations were the Dutch pompen, the German pumpen, and the Danish pompe.  All are thought derived from the Spanish bomba of imitative origin, the source thought to be North Sea sailors, either an imperfect echoic or something imitative of the sound of the plunger in the water.  The earliest use in English was in reference to a device to raise and expel bilge water from ships and the Late Old French pompe probably is from something Germanic.  The mystery is that pumps are ancient machines so the late appearance in the Germanic word is odd in that no evidence has been found of a previous descriptive word.  The use as an "an act of pumping" is attested from the 1670s.  Pump & pumping are nouns & verbs, pumper is a noun, pumpy is a noun & adjective and pumped is a verb & adjective; the noun plural is pumps.

Pump-action, in reference to a type of repeating firearm equipped with a rapid loading mechanism is attested in advertisements from 1912 but it’s unknown whether this was an invention by a manufacturer or retailer or an adoption of existing slang.  The metaphoric extension in pump (someone) for information is from 1630s.  To pump iron as a term for the lifting of weights for fitness was first noted in 1972; pump-classes in gyms became popular in the 1990s although label wasn’t (virtually) universal until circa 2002.  The meaning “low shoe without fasteners" dates from the 1550s and is of unknown origin but was perhaps (very speculatively) echoic of the sound made when walking in them or, more plausibly, from Dutch pampoesje (type of sandal worn in the Dutch East Indies), derived from the Javanese pampoes and ultimately of Arabic origin.  Some sources propose a connection with pomp but it’s undocumented.  The name pump was applied to many shoes with a very low heel, convenient in situations where freedom of movement was required and thus preferred by dancers, couriers, acrobats, duellists and such.  In the shoe business, the definition soon wandered with differences noted between British and North American applications.

The now obsolete nineteenth century phrase “keep your toes in your pump” was dialectal for "stay calm, keep quiet, don't get excited", in the same sense as advice not to “get your knickers in a knot”, the latter which has survived.  In slang, to "be pumped" is (1) to be excited in anticipation of something, (2) having muscles in an engorged state following exercise, (3) in body-building, having muscles which have responded as expected to steroids or other drugs, (4) in rock-climbing, being severely fatigued, (5) in cosmetic surgery & certain non surgical treatments, having a fuller appearance (lips, breasts etc) by virtue of the insertion of implants or an injection of some chemical and (6) among models and other women, the sense of relief upon replacing fetching but uncomfortable shoes with a pair of welcoming and accommodating pumps.

Of pumping ship

Pumps are of great importance on ships because of the need quickly to be able to remove unwanted water from inside a hull.  At sea, when a ship is "taking on water", if pumps fail or the entry of water exceeds pumping capacity, a ship will become unstable and it may sink.  In the smallest vessels, hard-pumps are used while mechanical devices are installed on anything larger than a modest dinghy.  In admiralty jargon, the command “Pump Ship!” is an instruction to begin pumping with all pumps and, in the way sailors adapt such things, it entered naval vernacular as the phrase meaning “I intend to urinate”.

It was picked up by nautical types in civilian life but was probably unknown to most until the publication (in three volumes, 2021-2022) of the unexpurgated diaries of Sir Henry "Chips" Channon (1897–1958), a US born English MP and socialite.  Edited by Dr Simon Heffer (b 1960), the entry of interest was from 19 November 1936 when Channon hosted one of his many glittering dinners in the dining room designed by Parisian interior decorator Stéphane Boudin (1888–1967, his House of Jansen later decorating the White House for Jacqueline Kennedy (1929-1994; US First Lady 1961-1963)) and modelled on the interior of the Amalienburg, an eighteenth century hunting lodge in on the grounds of the Nymphenburg Palace Park outside Munich, a place notorious for the intricacy of its fittings, even by the standards of Rococo.  The Amalienburg was built for someone who would later be Holy Roman Emperor, just the sort of crew with whom Channon identified and he had the elaborate style replicated in the dining room of his London house in Belgrave Square, including even the Bavarian national colors of blue & silver.  Unfortunately, no color photographs appear to have survived and the room was later disassembled, the extendable mirrored table, which could expand to a length of 25 feet (7.7 m), occasionally offered at auction.  By all accounts, the room truly was “breathtaking” and it was one of the few things in life of which Channon could find no grounds for criticism, it living up to his expectation it would “shimmer in blue and silver” and “shock and stagger London”.  For that alone he seemed to think the Stg£6,000 (mostly money he had married) cost (some Stg£525,000 adjusted for 2023) well worth it.  To illustrate the relativities, the next year he would purchase a V12 Rolls-Royce Phantom III for a sum (Stg£1900 for the chassis & another Stg£1100 to have a coach-builder fabricate a body) which would then have bought six houses in a middle-class London suburb although it’s not known if that’s something he’d have known, “middle class” being about the worst thing he could think to say of anyone.

Dining Room, 5 Belgrave Square, London, circa 1937.

On that November evening the guest of honor was King Edward VIII (1894–1972; King of the UK & Emperor of India January-December 1936, subsequently Duke of Windsor) and Channon noted in his diary his surprise at the monarch’s “modern” turn of phrase when he rose and announced “I want to pump shit.”  A dutiful host, Channon recorded he “…led His Majesty to our loulou! He proceeded to pass water without shutting the door, talking to me the while”.  That fragment of royal history was printed in the first volume (2021) of the published diaries (it was a measure of the deference which still applied in the England of 1965 that when first they appeared in heavily redacted form the passage was omitted) but comments soon appeared suggesting neither Channon nor Dr Heffer were well-acquainted with the sailors' slang the king would have learned during his brief naval career.  Dr Heffer responded by examining closely the original entry in the diarist’s hand and concluded the relevant character really was a “t” and not a “p” so the words on the night were either “misheard or misunderstood” and there’s little doubt what was said was “pump ship” and not “pump shit”.  He added that like Channon, he had “no naval connections” and was as thus just as “unfamiliar with the sea-dog slang” but that when the paperback edition was proofed, the text would be changed and an explanatory footnote (the diaries worth reading just for Heffer’s detailed footnotes) added.  Rising to the occasion, he observed this meant the “the hardback edition is destined to become a collector's item.”  The dinner proved the apogee of Channon’s social life because he’d backed the wrong royal horse, Edward VIII abdicating within weeks of having pumped ship in Belgrave Square.

Of Pumps, Courts and Flats

Lindsay Lohan in curved-heel stiletto pumps.

The homogenization of English was well-advanced long before the ubiquity of the internet but well into the twentieth century, different meanings for words could evolve in parallel in different regions of the same country, let alone between different states or provinces.  In British English, a court shoe was a woman’s shoe with a low cut vamp, sometimes with no instep fastening and otherwise adorned with a shoe buckle or a bow as an ostensible fastening.  In US English, such a shoe is a pump; pumps and court shoes may or may not have an ankle strap.  Pumps today, on either side of the Atlantic, are almost exclusively worn by women but historically were also formal shoes for men, the male variation called an opera slipper or patent pump.  For men, the pump gained ascendency over the dress boot as modern road-making techniques rendered cities less muddy places and dress pumps remained the standard for evening full-dress until the Second World War.  They remain the usual choice for black tie events and are obligatory with white-tie; the original design with steel-cut buckles, otherwise long extinct, still part of British court uniform and dress.

The construction of pumps is simple, using a whole-cut leather top with a low vamp, lined with either quilted silk or plain leather, trimmed with braid at the opening. The full leather sole is either glued onto the bottom, common on cheaper styles, or sewn, as on more costly bespoke styles still made traditionally, using a shallow slit to lift a flap of leather around the edge to recess and hide the stitching. The sole is, as on ordinary shoes, several layers of leather put together. The bow is made of grosgrain silk or rayon, in a pinched or flat form.  Pumps, which may have an ankle strap, if also constructed with a strap across the instep, are called Mary Janes.

Lindsay Lohan in ballet flats / pumps / slippers.  Ballet pumps in the UK, ballet flats in US English.

Most of the UK fashion business adopted the US use of pump because it simplified the mechanics of trade.  Otherwise, in the UK (and most of the Empire and Commonwealth) a pump implied a flat or low-heel ballet slipper or even rubber-soled canvas plimsolls.  Ballet slippers (now more often called flats) date from the medieval period, their popularity declining in only in the seventeenth century when higher heels became fashionable.  After a brief nineteenth century revival, heals again prevailed until the 1960s when they became suddenly and wildly popular after Brigitte Bardot appeared in a pair of Rose Repetto’s hand-stitched ballet flats.  These days, between heals and flats, it seems a draw although the trend increasingly to prefer the comfort of the flat as the years pass is noted.

Lindsay Lohan in kitten-heeled pumps.

Except for court dress, historic references or the exact (if not always enforced) rules for white-tie, there’s now less precision attached to the use of pump and the word should be thought of as referencing a range of closed and open-toed shoes, with and without straps, bows or buckles, the other useful modifier being some reference to the height or type of the heel.  This means anything from a modest kitten to an elongated stiletto and, depending on the airport at which one lands, a flat may be a ballet flat or a ballet pump.

In US use, pumps are exclusively women's shoes with a kitten or higher heel; flats are never pumps and Canada, always more influenced by US linguistic imperialism, followed; that influence is now almost universal and the notion of the flat pump, while not extinct, has declined.  Heels for pumps vary, from the kitten 1-2 inch (25-50 mm) to the stripper (200-250 mm), the bulk of stiletto sales in the 3-5 inch (75-125 mm) range.  They can be made from any material though the classic is patent leather and, under rules formalised by Donald Trump's (b 1946; US president 2017-2021) Miss Universe contests, white, stiletto pumps were once obligatory in the swimsuit section of beauty pageants.  Perhaps surprisingly to some, the swimsuits have survived much criticism as have the stilettos although they're no longer exclusively white and, open-toed and strappy, in most places they wouldn't even be thought of as pumps.

Of the Holley Double Pumper

Even in an age when electronic fuel-injection (EFI) has long been the standard form of induction in internal combustion engines, there remain silos in which the now arcane languages of carburetors are spoken and while there is some commonality of terms among the shortcuts, abbreviations & euphemisms of these vernaculars, a trained ear can pick the differences between the flavours to tell which dialect (SU, Weber, Holley, Rochester, Carter et al) is in play.  One part of the Holley tongue is “double pumper”.  A Holley double pumper is a four barrel carburettor with two accelerator pumps (the source of the moniker) and a mechanical linkage connecting the primary and secondary sides of the device.  Widely used during the classic era (1964-1971) of the US muscle cars, the main advantage of the design was the twin accelerator pumps prevented the transitory leanness in the fuel-air mixture which can happen during quick throttle blade movements if only a single pump is fitted.  All multi-barrel carburetors use an accelerator pump circuit but many have only one feeding the primary barrel(s).  These pumps spray a quick shot of the mix to compensate for the split-second lag which will happen before the main circuit fully responds to a throttle pushed suddenly wide open.  All double pumper carburetors use an accelerator pump circuit on both the primary and the secondary sides.

Holley 850 CFM (cubic feet per minute) double pumper carburetor (part number 0-4781C) (left).  The double accelerator pump outlets for both the primary and secondary throttle bores are are arrowed (right), in this case on a HP (high-performance) version in which the choke housing has been removed to optimize the air inlet path, making it less suitable for street use but ideal for competition.

It’s important not to refer to vacuum secondary carburettors (VSC) as any sort of pumper.  A VSC uses a secondary opening controlled by a vacuum diaphragm which opens the secondary barrels only when there is sufficient airflow demand to require it so no accelerator pump is required on the secondary side.  So, a VSC is technically a “single pumper carburettor” but that term is never used and anyone referring to one as such will lose face.  There's also a point of etiquette of which to be aware.  While “VSC” is an accepted term, a double pumper is never referred to as a “DP” because use in the pornography industry has made “DP” exclusively their own and it seems mere politeness not to intrude on their noble linguistic traditions.

There is an (unverified) industry legend that the "double buffer" terminology adopted in 1991 when Microsoft released version 4 of the Smart Drive (smartdrv.exe) disk cache was the coining of a coder who used a Holley double pumper in his muscle car.  That may or may not be true but "double buffer" lives on in the memory management of graphics processing units (GPU) as a description of the temporary storage areas in main memory where data is held during the transfer process.  The trick is that rather than processes being sequential, while program x is being read, program y can be written and vice versa.  It's not exactly quantum mechanics but means things simultaneously are happening in two places; for the gamers for whom GPUs are a fetish, every millisecond matters.

Weiland tunnel ram inlet manifold for big block Chevrolet V8 (396-427-454) with dual Holley 750 CFM double pumpers.