mouthpiece
US /ˈmaʊθ.piːs/
UK /ˈmaʊθ.piːs/
1.
a person or organization that voices the opinions or policies of another
:
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The newspaper became a mouthpiece for the government.
•
He acted as a mouthpiece for the community's concerns.
2.
the part of a telephone, microphone, or other device into which one speaks
:
•
Speak clearly into the mouthpiece.
•
He wiped the mouthpiece of the phone before handing it to me.
3.
the part of a wind instrument that is placed in or against the player's mouth
:
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The trumpet player cleaned his mouthpiece after the performance.
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She replaced the worn-out mouthpiece on her clarinet.