American Dictionary

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Definition mouthpiece in American English

mouthpiece noun

[countable] noun
/ˈmaʊθˌpis/
1

the part of something such as a musical instrument or a telephone that you put in or near your mouth

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2

a lawyer, especially one who defends someone accused of a crime

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3

a person who expresses the opinions and beliefs of a government, an organization, or another person

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3.1

used about newspapers and magazines that are used to do this

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Definition mouthpiece in American English