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English definition of “mouthpiece”

mouthpiece

noun [C] (PIECE OF EQUIPMENT)    /ˈmaʊθ.piːs/
the part of a phone , musical instrument , or other device that goes near or between the lips : To play the recorder , blow gently into the mouthpiece.Musical instruments in generalTelephone equipment
(Definition of mouthpiece noun (PIECE OF EQUIPMENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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