Noun: plunger plún-ju(r)
- Hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
"He tried to clear the sink blockage with a plunger";
- plumber's helper [N. Amer], plumber's friend
- Mechanical device that has a plunging or thrusting motion
"The engine's plungers moved up and down in their cylinders";
- piston
- Someone who dives (into water)
"The plunger entered the water with barely a splash";
- diver
- Someone who risks losses for the possibility of considerable gains
"The plunger invested heavily in the volatile stock market";
- speculator
Derived forms: plungers
Type of: adventurer, gambler, hand tool, mechanical device, swimmer, venturer
Part of: reciprocating engine
Encyclopedia: Plunger