Suction \Suc"tion\, n. [L. sugere, suctum, to suck; cf. OF. suction. See Suck, v. t.]

The act or process of sucking; the act of drawing, as fluids, by exhausting the air.

Suction chamber, the chamber of a pump into which the suction pipe delivers.

Suction pipe, Suction valve, the induction pipe, and induction valve, of a pump, respectively.

Suction pump, the common pump, in which the water is raised into the barrel by atmospheric pressure. See Illust. of Pump.

Source: Webster's Revised Unabridged Dictionary (1913)