Plunger



ENGLISH MEANING
noun
1.
One who, or that which, plunges; a diver.
2.
A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.
3.
One who bets heavily and recklessly on a race; a reckless speculator.
4.
A boiler in which clay is beaten by a wheel to a creamy consistence.
5.
The firing pin of a breechloader.