mouthpiece (English)

Noun

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

Noun

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

Noun

a spokesperson (as a lawyer)

Noun

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

Noun

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

Noun

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