plunger

• POS: Noun
• HYPHEN: plung=er

CIDE DICTIONARY

plunger, n. 

•  One who, or that which, plunges; a diver.  [1913 Webster]
•  A long solid cylinder, used, instead of a piston or bucket, as a forcer in pumps.  [1913 Webster]
•  One who bets heavily and recklessly on a race; a reckless speculator.  [1913 Webster]
•  A boiler in which clay is beaten by a wheel to a creamy consistence.  Knight.  [1913 Webster]
•  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

OXFORD DICTIONARY

plunger, n.
1 a part of a mechanism that works with a plunging or thrusting movement.
2 a rubber cup on a handle for clearing blocked pipes by a plunging and sucking action.
3 colloq. a reckless gamble.

THESAURUS

plunger

adventurer, betting ring, bettor, big operator, boneshaker, cardshark, cardsharp, cardsharper, compulsive gambler, crap shooter, deep-sea diver, diver, free diver, frogman, gambler, gamester, gunslinger, hazarder, jumper, lame duck, margin purchaser, operator, parachute jumper, pearl diver, petty gambler, piker, player, punter, scalper, scuba diver, sharp, sharper, sharpie, skin diver, sky diver, smart operator, snorkel diver, speculator, sport, sporting man, sportsman, stag, tinhorn, tipster, tout, venturer, wagerer