Meaning of “mouthpiece” in the English Dictionary

(Definition of “mouthpiece” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"mouthpiece" in American English

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mouthpiecenoun [ C ]

us /ˈmɑʊθˌpis/

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)