1. (noun) mouthpiece
a part that goes over or into the mouth of a person
Synonyms: mouth, embouchure, gumshield
2. (noun) mouthpiece
an acoustic device; the part of a telephone into which a person speaks
Synonyms: mouth, embouchure, gumshield
3. (noun) mouthpiece, mouth
a spokesperson (as a lawyer)
Synonyms: sassing, gumshield, lip, mouthpiece, oral fissure, embouchure, mouth, back talk, backtalk, rima oris, oral cavity, sass
4. (noun) mouthpiece, gumshield
(especially boxing) equipment that protects an athlete's mouth
Synonyms: mouth, embouchure, gumshield, mouthpiece
5. (noun) mouthpiece
the tube of a pipe or cigarette holder that a smoker holds in the mouth
Synonyms: mouth, embouchure, gumshield
6. (noun) mouthpiece, embouchure
the aperture of a wind instrument into which the player blows directly
Synonyms: mouth, embouchure, gumshield, mouthpiece
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Synonyms and Antonyms of mouthpiece 
