Pump (p&ucr;mp), n. [Probably so called as being worn for pomp or ornament. See Pomp.]
A low shoe with a thin sole.
<-- MW10 says "close-fitting shoe with moderate to high heel". Usage changed? -->
Swift.
© Webster 1913.
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.
<-- this definition is for a mechanical pump. A peristaltic pump would not fit this def. MW10: "a device that raises, transfers, or compresses fluids . . . by suction or pressure or both." -->
⇒ 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.<-- vacuum pump, a pump which creates a vacuum by removing gas (usually air) from a container. Mechanical vacuum pump, a vacuum pump operating by the motion of a piston or rotary blade in a chamber, as contrasted with an aspirator. Persistaltic pump, a pump transferring fluids by peristaltic action on a flexible tube. Such pumps are used where a gentle pumping action is desired, or the transferred fluid may be harmed in a mechanical pump; as in the infusion of fluids into blood vessels of the body, or the pumping of explosive or easily decomposed fluids. -->
© Webster 1913.
Pump, v. t. [imp. & p. p. Pumped (p&ucr;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.
© Webster 1913.
Pump, v. i.
To work, or raise water, a pump.
© Webster 1913.