Pronunciation: /ˈplʌn(d)ʒə/
noun
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1a part of a device or mechanism that works with a plunging or thrusting movement.
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a device consisting of a rubber cup on a long handle, used to clear blocked pipes by means of suction.
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2 informal a person who gambles or spends money recklessly: he is a plunger when it comes to spending money for news