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Meaning of suction pump

suc'tion pump"

Pronunciation: [key]
  1. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.