Dictionary definition · pump
noun
- a mechanical device that moves fluid or gas by pressure or suction
- the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body"he stood still, his heart thumping wildly"
- a low-cut shoe without fastenings
verb
- operate like a pump; move up and down, like a handle or a pedal"pump the gas pedal"
- deliver forth"pump bullets into the dummy"
- draw or pour with a pump
- supply in great quantities"Pump money into a project"
- flow intermittently
- move up and down"The athlete pumps weights in the gym"
- raise (gases or fluids) with a pump
- question persistently"She pumped the witnesses for information"
Source: Open English WordNet (CC BY 4.0).