suction-pump

suction pump

noun
a pump for raising water or other fluids by suction, consisting essentially of a vertical cylinder in which a piston works up and down, both the cylinder and the pump having valves that control the flow of the fluid.

Origin:
1815–25

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
suction pump
 
n
a pump for raising water or other fluid by suction. It usually consists of a cylinder containing a piston fitted with a flap valve

Collins English Dictionary - Complete & Unabridged 10th Edition
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