Topic: TELEPHONE, TELEGRAPH
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mouth‧piece
[countable]
[countable]1APMTCT the part of a musical instrument, telephone etc that you put in your mouth or next to your mouth :
Ben put his hand over the mouthpiece and shouted to me.
Ben put his hand over the mouthpiece and shouted to me.2 [usually singular]PG a person, newspaper etc that expresses the opinions of a government or a political organization
