noun,# any of various piston-operated or other devices for forcing or driving liquids or gases into or out of something, etc.
- a standing device with a handle that is worked up and down for raising water from beneath the ground, especially one serving as the water supply to a community.
- a a device for forcing air into a tyre; b in compounds • bicycle pump • foot pump.
- (also petrol pump) a device for raising petrol from an underground storage tank to fill a vehicle's petrol tank.
verb (pumped, pumping) # tr & intr to raise, force or drive (a liquid or gas) out of or into something with a pump.
- (usually pump something up) to inflate (a tyre, etc) with a pump.
- to force something in large gushes or flowing amounts.
- to pour (money or other resources) into a project, etc.
- to force out the contents of (someone's stomach) to rid it of a poison, etc.
- to try to extract information from someone by persistent questioning.
- to work something vigorously up and down, as though operating a pump handle.
- to fire (bullets, etc), often into someone or something • pumped bullets into her. pump iron colloq to exercise with weights; to go in for weight-training.
ETYMOLOGY: 15c: from Dutch pumpe pipe.