plural of pump trolley

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

A force pump for supplying a steam engine's boiler with water.

Synonym of roughing pump

A type of vacuum pump that is used to achieve rough vacuum from initial atmospheric pressure.

present participle of pump out

simple past tense and past participle of pump out

(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.

A pump in which water is raised by the inverted action of a turbine-wheel.

(US, slang) pump attendant