Third-person singular simple present indicative form of pump

(nautical) A small pump fitted in ships and boats to pump the bilges clear of water.

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.

(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

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

(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.

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