a pump used for the removal of liquid from a sump or sump pit

A small hand-operated pump with a stirrup-shaped base that was placed in a bucket of water, allowing a small hose to direct a stream onto minor fires.

A pump that moves air either into or out of something.

(weightlifting, informal) The activity of weightlifting, especially for the purposes of bodybuilding.

(informal) Excited, particularly due to anticipation. / (bodybuilding, not comparable) Having muscles in an engorged state following exercise due to increased blood flow.

simple past tense and past participle of pump up

present participle of pump iron

(transitive) To inflate by means of a pump. / (transitive) To inflate with a pumping action. / (transitive, figuratively) To excite a person or group to a frenzy.

(Canada, US) A device at a gas station that dispenses gasoline.

(Australia, New Zealand) Under pressure to perform, e.g. at work or in a sports contest. / Used other than figuratively or idiomatically: see under, pump.