1. A machine or device for raising, compressing, or transferring fluids.
2. physiology A molecular mechanism for the active transport of ions or molecules across a cell membrane.
3. physics electromagnetic radiation used to raise atoms or molecules to a higher energy level.
4. informal the heart.
5. to raise or cause to flow by means of a pump.
6. to draw, deliver, or pour forth as if with a pump.
7. to remove the water from: pump out a flooded basement.
8. to cause to move with the up-and-down motion of a pump handle: a bicyclist pumping the pedals.
9. to propel, eject, or insert with or as if with a pump: pumped new life into the economy.
10. physics to raise (atoms or molecules) to a higher energy level by exposing them to electromagnetic radiation at a resonant frequency.
11. physiology to transport (ions or molecules) against a concentration gradient by the expenditure of chemically stored energy.
12. to question closely or persistently: pump a witness for secret information.
13. to operate a pump.
14. to raise or move gas or liquid with a pump.
15. to move up and down in the manner of a pump handle.
16. sports to fake a throw, pass, or shot by moving the arm or arms without releasing the ball.
17. pump up to inflate with gas by means of a pump: pump up a tire.
18. pump up slang to fill with enthusiasm, strength, and energy: the lively debate really pumped us up.
19. pump up sports to be actively involved in a bodybuilding program: athletes pumping up at the gym.
20. pump iron sports to lift weights.
21. A woman's shoe that has medium or high heels and no fastenings.

1. A device for moving or compressing a liquid or gas.
2. an instance of the action of a pump; one stroke of a pump; any action similar to pumping
3. A device for dispensing liquid or gas to be sold, particularly fuel.
4. A swelling of the muscles caused by increased blood flow following high intensity weightlifting.
5. A ride on a bicycle given to a passenger, usually on the handlebars or fender.
6. the heart.
7. to use a pump to move (liquid or gas).
8. (often followed by up) to fill with air.
9. to move rhythmically, as the motion of a pump.
10. to shake (a person's hand) vigorously.
11. to gain information from (a person) by persistent questioning.
12. to use a pump to move liquid or gas.
13. (slang) to be going very well.
14. to kick, throw or hit the ball far and high.
15. to pass gas; to fart.
16. A type of shoe, a trainer or sneaker.
17. A type of very high-heeled shoe; stilettoes.
18. A dancing shoe.
19. A type of shoe without a heel (source: Dictionarium Britannicum - 1736)

1. A low shoe with a thin sole.
2. 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.
3. to work, or raise water, a pump.
4. to raise with a pump, as water or other liquid.
5. to draw water, or the like, from; to from water by means of a pump
6. 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.

1. to work a pump; raise water or other liquid with a pump.
2. to raise with a pump: as, to pump water.
3. to free from water or other fluid by means of a pump or pumps: as, to pump a ship.
4. to elicit or draw out by or as by artful interrogation: as, to pump out secrets.
5. to subject to a pumping process for the purpose of extracting, procuring, or obtaining something, such as money, information, or secrets.
6. to throb; beat.
7. to issue in intermittent jets, as blood from a wounded artery.
8. one of several kinds of hydraulic and pneumatic machines.
9. [⟨ pump, verb] an artful effort to extract or elicit information, as by indirect question or remark.
10. A low shoe or slipper, with a single unwelted sole, and without a heel, or with a very low heel, worn chiefly for dancing.

1. raise (gases or fluids) with a pump
2. operate like a pump; move up and down, like a handle or a pedal
3. question persistently
4. supply in great quantities
5. a mechanical device that moves fluid or gas by pressure or suction
6. the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
7. flow intermittently
8. draw or pour with a pump
9. move up and down
10. deliver forth
11. a low-cut shoe without fastenings