单词 | plunger |
释义 | plung·er ![]() n. 1. One who plunges or dives. 2. A device consisting of a rubber suction cup attached to the end of a stick, used to unclog drains and pipes. Also called plumber's helper. 3. A part of a machine, tool, or device that operates wtih a thrusting or plunging movement, such as a piston. |
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