noun : VALVE
Source: WordNet 3.1
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1. (
) a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it ;
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2. (
) device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone ;
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3. (
) control consisting of a mechanical device for controlling the flow of a fluid ;
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4. (
) the entire one-piece shell of a snail and certain other molluscs ;
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5. (
) one of the paired hinged shells of certain molluscs and of brachiopods ;
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