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