Meaning of PLUNGER in English

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.

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.