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plunger

noun
🔊/ˈplʌndʒə(r)/
🔊/ˈplʌndʒər/
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  1. a part of a piece of equipment that can be pushed down柱塞；活塞
  2. a piece of equipment used for clearing kitchen and bathroom pipes, that consists of a rubber cup fixed to a handle（疏通管道用的）搋子Topics Houses and homesc2