mouthpiece has definitions from the fields of music,boxing,games
1
[ noun ] a part that goes over or into the mouth of a person

Examples

"the mouthpiece of a respirator"

Used in print

(Walter H. Buchsbaum, "Advances in Medical Electronics"...)

Usually the patient breathes into a mouthpiece while walking a treadmill , standing_still , or in some other medically significant position .

Related terms

aperture respirator

2
[ noun ] an acoustic device; the part of a telephone into which a person speaks

Used in print

(Doris Miles Disney, Mrs. Meeker's Money....)

He scooped_up the receiver and said , `` Police_chief '' , into the mouthpiece , and then , `` Oh yes , Mr._Benson .

Related terms

acoustic_device telephone

3
[ noun ] (especially boxing) equipment that protects an athlete's mouth

Synonyms

gumshield

Related terms

sports_equipment boxing

4
[ noun ] the tube of a pipe or cigarette holder that a smoker holds in the mouth

Related terms

tube pipe cigarette_holder

5
[ noun ] (informal) a spokesperson (as a lawyer)

Synonyms

mouth

Related terms

spokesperson colloquialism

6
[ noun ] (music) the aperture of a wind instrument into which the player blows directly

Synonyms

embouchure

Related terms

aperture wind_instrument

*