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