A kind of vacuum pump in which vacuum is produced by a stream of mercury drops running down a very narrow tube

plural of pump trolley

A light railroad car propelled by a hand-operated pumping mechanism; a handcar.

Alternative form of pump room

(sometimes capitalized) A room housing a pump, especially a room or structure at a spa where mineral water is drawn from a spring and consumed, formerly often serving as a venue for polite socializing and conversation.

present participle of pump out

simple past tense and past participle of pump out

A hydraulic device attached to a door in its one end and to the doorframe in the other, performing one or more of the following functions: a) dampening the movements of the door, b) making sure that the door closes properly, and c) assisting in opening it.

A form of rotary pump.

A pump especially adapted for pumping water from the hull of a wrecked vessel.