Plun"ger (?), n.


One who, or that which, plunges; a diver.


A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.


One who bets heavily and recklessly on a race; a reckless speculator.


4. Pottery

A boiler in which clay is beaten by a wheel to a creamy consistence.


5. Gun.

The firing pin of a breechloader.

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


© Webster 1913.