pump

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. Engineering, 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.
3. Biology. an animal organ that propels fluid through the body; heart.
4. 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.

1. to raise, drive, etc., with a pump.
2. to free from water or other liquid by means of a pump.
3. to inflate by pumping (often followed by up ):

   to pump a tire up.

4. to operate or move by an up-and-down or back-and-forth action.
5. to supply with air, as an organ, by means of a pumplike device.
6. to drive, force, etc., as if from a pump:

   He rapidly pumped a dozen shots into the bull's-eye.

7. to supply or inject as if by using a pump:

   to pump money into a failing business.

8. to question artfully or persistently to elicit information:

   to pump someone for confidential information.

9. to elicit (information) by questioning.

1. to work a pump; raise or move water, oil, etc., with a pump.
2. to operate as a pump does.
3. to move up and down like a pump handle.
4. to exert oneself in a manner likened to pumping:

   He pumped away at his homework all evening.

5. to seek to elicit information from a person.
6. to come out in spurts.

verb phrase

1. 1. to inflate.
   2. to increase, heighten, or strengthen; put more effort into or emphasis on; intensify:

      The store has decided to pump up its advertising.

   3. to infuse with enthusiasm, competitive spirit, energy, etc.:

      The contestants were all backstage pumping themselves up for their big moment.

1. a lightweight, low-cut shoe without fastenings for women.
2. a slip-on black patent leather shoe for men, for wear with formal dress.