Main Entry: plung·er

Pronunciation: \ˈplən-jər\

Function: noun

Date: 1611

: one that plunges: as a : diver b : a reckless gambler or speculator c (1) : a sliding reciprocating piece driven by or against fluid pressure; especially : piston (2) : a piece with a motion like that of a ram or piston d : a rubber suction cup on a handle used to free plumbing traps and waste outlets of obstructions