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

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

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.

(biochemistry) The transport of sodium ions across biological membranes using the metabolic energy of ATP.

A water pump consisting of a series of buckets on a chain, wheel or drum.

A device used by a lactating woman to extract milk from her breasts (typically for short-term storage).

plural of stomach pump