pump meaning and definition

PUMP noun

Definition of pump (noun)

1. a mechanical device that moves fluid or gas by pressure or suction
2. 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"
   • synonyms: heart, ticker
3. a low-cut shoe without fastenings

PUMP verb

Definition of pump (verb)

1. operate like a pump; move up and down, like a handle or a pedal
   • "pump the gas pedal"
2. deliver forth
   • "pump bullets into the dummy"
3. draw or pour with a pump
4. supply in great quantities
   • "Pump money into a project"
5. flow intermittently
6. move up and down
   • "The athlete pumps weights in the gym"
7. raise (gases or fluids) with a pump
8. question persistently
   • "She pumped the witnesses for information"