| Noun | 1. | pump - a mechanical device that moves fluid or gas by pressure or suction |
| 2. | pump - the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body; "he stood still, his heart thumping wildly" | |
| 3. | pump - a low-cut shoe without fasteningsSynonyms: pumps | |
| Verb | 1. | pump - operate like a pump; move up and down, like a handle or a pedal |
| 2. | pump - deliver forth; "pump bullets into the dummy" | |
| 3. | pump - draw or pour with a pump | |
| 4. | pump - supply in great quantities; "Pump money into a project" | |
| 5. | pump - flow intermittently | |
| 6. | pump - move up and down; "The athlete pumps weights in the gym" | |
| 7. | pump - raise (gases oor fluids) with a pump | |
| 8. | pump - question persistently; "She pumped the witnesses for information" |
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