Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

American Heritage Dictionary - Cite This Source - Share This

pump 1       (pŭmp)  Pronunciation Key  (click for larger image in new window) n.   A machine or device for raising, compressing, or transferring fluids. Physiology A molecular mechanism for the active transport of ions or molecules across a cell membrane. Physics Electromagnetic radiation used to raise atoms or molecules to a higher energy level. Informal The heart. v.   pumped, pump·ing, pumps v.   tr. To raise or cause to flow by means of a pump. To draw, deliver, or pour forth as if with a pump. To remove the water from: pump out a flooded basement. To cause to move with the up-and-down motion of a pump handle: a bicyclist pumping the pedals. To propel, eject, or insert with or as if with a pump: pumped new life into the economy. Physics To raise (atoms or molecules) to a higher energy level by exposing them to electromagnetic radiation at a resonant frequency. Physiology To transport (ions or molecules) against a concentration gradient by the expenditure of chemically stored energy. To question closely or persistently: pump a witness for secret information. v.   intr. To operate a pump. To raise or move gas or liquid with a pump. To move up and down in the manner of a pump handle. Sports To fake a throw, pass, or shot by moving the arm or arms without releasing the ball. Phrasal Verb(s): pump up To inflate with gas by means of a pump: pump up a tire. Slang To fill with enthusiasm, strength, and energy: The lively debate really pumped us up. Sports To be actively involved in a bodybuilding program: athletes pumping up at the gym. Idiom(s): pump iron Sports To lift weights. [Middle English pumpe.] pump'er n.

American Heritage Dictionary - Cite This Source - Share This

pump 2       (pŭmp)  Pronunciation Key  n.   A woman's shoe that has medium or high heels and no fastenings. [Origin unknown.]

Online Etymology Dictionary - Cite This Source - Share This
pump  (1)

Online Etymology Dictionary - Cite This Source - Share This
pump  (2)

WordNet - Cite This Source - Share This

pump
noun
1.	a mechanical device that moves fluid or gas by pressure or suction
2.	the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body; "he stood still, his heart thumping wildly" [syn: heart]
3.	a low-cut shoe without fastenings
verb
1.	operate like a pump; move up and down, like a handle or a pedal; "pump the gas pedal"
2.	deliver forth; "pump bullets into the dummy"
3.	draw or pour with a pump
4.	supply in great quantities; "Pump money into a project"
5.	flow intermittently
6.	move up and down; "The athlete pumps weights in the gym"
7.	raise (gases or fluids) with a pump
8.	question persistently; "She pumped the witnesses for information"

The American Heritage Science Dictionary - Cite This Source - Share This

pump       (pŭmp)  Pronunciation Key  (click for larger image in new window) A device used to raise or transfer fluids. Most pumps function either by compression or suction. A molecular mechanism for the active transport of ions or molecules across a cell membrane.

American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

pump (pŭmp)
n.

1. A machine or device for raising, compressing, or transferring fluids.
2. A molecular mechanism for the active transport of ions or molecules across a cell membrane.

v. pumped, pump·ing, pumps

1. To raise or cause to flow by means of a pump.
2. To transport ions or molecules against a concentration gradient by the expenditure of chemically stored energy.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Pump

Pump\ (p[u^]mp), n. [Probably so called as being worn for pomp or ornament. See Pomp.] A low shoe with a thin sole. --Swift.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Pump

Pump\, n. [Akin to D. pomp, G. pumpe, F. pompe; of unknown origin.] An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston.

Note: for various kinds of pumps, see Air pump, Chain pump, and Force pump; also, under Lifting, Plunger, Rotary, etc.

Circulating pump (Steam Engine), a pump for driving the condensing water through the casing, or tubes, of a surface condenser.

Pump brake. See Pump handle, below.

Pump dale. See Dale.

Pump gear, the apparatus belonging to a pump. --Totten.

Pump handle, the lever, worked by hand, by which motion is given to the bucket of a pump.

Pump hood, a semicylindrical appendage covering the upper wheel of a chain pump.

Pump rod, the rod to which the bucket of a pump is fastened, and which is attached to the brake or handle; the piston rod.

Pump room, a place or room at a mineral spring where the waters are drawn and drunk. [Eng.]

Pump spear. Same as Pump rod, above.

Pump stock, the stationary part, body, or barrel of a pump.

Pump well. (Naut.) See Well.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Pump

Pump\, v. t. [imp. & p. p. Pumped (p[u^]mt; 215); p. pr. & vb. n. pumping.]

1. To raise with a pump, as water or other liquid.

2. To draw water, or the like, from; to from water by means of a pump; as, they pumped the well dry; to pump a ship.

3. Figuratively, to draw out or obtain, as secrets or money, by persistent questioning or plying; to question or ply persistently in order to elicit something, as information, money, etc.

But pump not me for politics. --Otway.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Pump

Pump\, v. i. To work, or raise water, a pump.