noun.
One who, or that which, plunges; a diver.
noun.
A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.
noun.
One who bets heavily and recklessly on a race; a reckless speculator.
noun.
A boiler in which clay is beaten by a wheel to a creamy consistence.
noun.
The firing pin of a breechloader.
noun.
a piston, without a valve, in a pump.
noun.
the pump rod of a pumping engine.
noun.
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.