Definition of pump

• n. - A low shoe with a thin sole.
• n. - 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.
• v. t. - To raise with a pump, as water or other liquid.
• v. t. - 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.
• v. t. - 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.
• v. i. - To work, or raise water, a pump.