The Collaborative International Dictionary of English v.0.48:

Pump \Pump\, v. i.
   To work, or raise water, a pump.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

   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.
      [1913 Webster]

   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.
      [1913 Webster]

            But pump not me for politics.         --Otway.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

   Note: for various kinds of pumps, see Air pump, Chain
         pump, and Force pump; also, under Lifting,
         Plunger, Rotary, etc.
         [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

pump
    n 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, pump, ticker]
    3: a low-cut shoe without fastenings
    v 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"

Moby Thesaurus II by Grady Ward, 1.0:

183 Moby Thesaurus words for "pump":
   abdomen, add to, aggrandize, air pump, amplify, animate, anus,
   appendix, aspirator, augment, bail out, beer pump, bicycle pump,
   bilge pump, bleed, blind gut, bloat, blow up, bowels, brain,
   breast pump, broach, broaden, bucket pump, build, build up, bulk,
   bulk out, carve, catechize, cecum, centrifugal pump, chisel, colon,
   concentrate, convert, corkscrew, crescendo, cross-examine, crowbar,
   cultivate, decant, deliver, develop, dilate, distend, donkey,
   donkey pump, draft, draft off, drain, drainage pump, draw,
   draw from, draw off, duodenum, electrify, emphasize, empty,
   endocardium, energize, enlarge, enthuse, entrails, examine, excite,
   exhaust, expand, extend, extract, extractor, feed pump, force,
   force pump, forceps, forcer, foregut, galvanize, giblets, gizzard,
   grill, grow, guts, hand pump, harvest, heart, heat pump, hike,
   hike up, hindgut, huff, increase, inflate, innards,
   inner mechanism, insides, inspire, inspirit, intensify, internals,
   interrogate, interview, intestine, inwards, jejunum, kidney,
   kishkes, large intestine, let, let blood, let out, lifting pump,
   liver, liver and lights, lung, machine, magnify, midgut, milk,
   mill, mine, motivate, perineum, phlebotomize, pincers, pipette,
   pliers, press, pressure pump, probe, process, puff, puff up,
   pump out, pump up, pumping engine, push, pylorus, query, question,
   quiz, raise, rarefy, rear, rectum, refine, rotary pump, sand pump,
   send, separator, shake, siphon, siphon off, small intestine, smelt,
   spleen, stimulate, stomach, stress, stretch, suck, suck out,
   suction pump, sufflate, swell, tap, test, ticker, tire pump,
   tripes, tweezers, up, vacuum pump, venesect, vermiform appendix,
   viscera, vitals, water pump, widen, wobble pump, works,
   worm out of, wringer