Plunger Plun"ger, n. 1. One who, or that which, plunges; a diver. [1913 Webster]

2. A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps. [1913 Webster]

3. One who bets heavily and recklessly on a race; a reckless speculator. [Cant] [1913 Webster]

4. (Pottery) A boiler in which clay is beaten by a wheel to a creamy consistence. --Knight. [1913 Webster]

5. (Gun.) The firing pin of a breechloader. [1913 Webster]

{Plunger bucket}, a piston, without a valve, in a pump.

{Plunger pole}, the pump rod of a pumping engine.

{Plunger pump}, a pump, as for water, having a plunger, instead of a piston, to act upon the water. It may be single-acting or double-acting [1913 Webster]

The Collaborative International Dictionary of English. 2000.


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