(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.

(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.

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

A form of rotary pump.

(slang) A sex toy that induces suction towards the labia and vulva.