mouthpiece

Plural: mouthpieces

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
• A part of any device that functions in or near the mouth, especially:
• The part of a telephone that is held close to the mouth.
• A part of any device that functions in or near the mouth, especially:
• The part of a wind instrument that is held in or against the mouth.
• A spokesman; one who speaks on behalf of someone else.
• A lawyer for the defense.

Examples

• The novel's protagonist serves as a mouthpiece for the author's political views.

Synonyms

embouchure, gumshield, mouth