- A pump having a solid piston, or plunger, for drawing and
forcing a liquid, as water, through the valves; in distinction from a
pump having a bucket, or valved piston. - A pump adapted for delivering water at a considerable
height above the pump, or under a considerable pressure; in distinction
from one which lifts the water only to the top of the pump or delivers
it through a spout. See Illust. of Plunger pump, under Plunger.
Definition
