Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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air pump a pump for suctioning, compressing, or injecting air.
bicycle pump a small pump used to inflate bicycle tires, esp. a hand-held pump that may be attached to a bicycle frame when not in use.
force pump a pump with a valveless plunger, used to raise the level of a liquid or convey it through a pipe by the application of pressure.
heat pump a device for heating or cooling a building by transferring heat from a low-temperature reservoir by means of a compressor and a heat exchanger.
pump iron (informal) to exercise the muscles, esp. by lifting weights.
pump priming (informal) the spending of government funds to stimulate private industry.
suction pump a pump that draws up liquid by means of the vacuum created by the motion of a piston.
sump pump a pump that expels liquid, esp. from a sump.