1. (

• mouthpiece ,

) a part that goes over or into the mouth of a person; "the mouthpiece of a respirator" ;

2. (

• mouthpiece ,

) an acoustic device; the part of a telephone into which a person speaks ;

3. (

• mouthpiece ,
• mouth ,

) a spokesperson (as a lawyer) ;

4. (

• mouthpiece ,
• gumshield

) (especially boxing) equipment that protects an athlete's mouth ;

5. (

• mouthpiece ,

) the tube of a pipe or cigarette holder that a smoker holds in the mouth ;

6. (

• mouthpiece ,
• embouchure

) the aperture of a wind instrument into which the player blows directly ;