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

Pump
Pump

more details ...

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

2. \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}.
   

3. \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.
   

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