Webster's Revised Unabridged Dictionary · 1913

Pump

Pump (pump) , noun

[Probably so called as being worn for pomp or ornament. See Pomp.]

A low shoe with a thin sole. — Swift

Pump , noun

[Akin to Dutch pomp, German pumpe, French 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.

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

Collocations (11)
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. [English]
Pump spear , Same as Pump rod, above.
Pump stock , the stationary part, body, or barrel of a pump.
Pump well (Nautical) , See Well.

Pump (pumt; 215) , transitive verb

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

Pump , intransitive verb

To work, or raise water, a pump.