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English definition of “mouthpiece”

mouthpiece

noun [C]  /ˈmɑʊθˌpis/ us  

mouthpiece noun [C] (PLACE FOR MOUTH)

the part of a musical instrument, telephone, or other device that goes near, on, or between the lips

mouthpiece noun [C] (OPINIONS)

a person or a newspaper that expresses the opinions of others: He’s a mouthpiece for the pharmaceutical industry.
(Definition of mouthpiece from the Cambridge Academic Content Dictionary © Cambridge University Press)
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