Meaning of mouthpiece

Definition of mouthpiece

(noun) a part that goes over or into the mouth of a person; "the mouthpiece of a respirator"
an acoustic device; the part of a telephone into which a person speaks
a spokesperson (as a lawyer)
(especially boxing) equipment that protects an athlete's mouth
the tube of a pipe or cigarette holder that a smoker holds in the mouth
the aperture of a wind instrument into which the player blows directly

Other information on mouthpiece

WIKIPEDIA results for mouthpiece
Amazon results for mouthpiece