(transitive) To consume [something] rapidly. / (by extension, figuratively) To continually absorb or expand through annexation.

(Britain, of a rival football club) Making an approach to a player, under contract to another club, in order to attempt to negotiate a transfer.

(transitive, Britain) To make a specific approach to a person considered to be suitable for a professional position.

(colloquial) Be happy; cheer up.

(idiomatic) To generate or encourage; to campaign for.

(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

(intransitive) To gain weight. / (transitive) To increase the weight of.

(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.

(transitive, idiomatic) To make tentative plans more definite. / (transitive) To make muscles more toned through physical exercise.