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Definition of mouthpiece

mouthpiece

/ˈmaʊθ.piːs/
mouth · piece

Plural:mouthpieces
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mouthpiece Lexical Profile

mouthpiece Game Scores & Validity

• noun

1

The part of a musical instrument, breathing apparatus, or communication device that is designed to be placed between or near a person's lips.

Example

"The trumpet player carefully wiped the brass mouthpiece before beginning his solo."


2

A person, publication, or organization that publicly expresses the opinions and policies of another person or entity.

Example

"The state-owned newspaper functions as a mere mouthpiece for the ruling regime."


3

A protective plastic or rubber device worn inside the mouth to prevent injury to the teeth and gums during contact sports.

Example

"The boxer returned to his corner after the bell rang and removed his bloody mouthpiece."

Synonyms
View all synonyms for mouthpiece

Word Nuance & Usage

When referring to a person or organization as a spokesperson, 'mouthpiece' often carries a pejorative nuance, implying they merely parrot another's views and lack independent thought or agency.

Word Origin & Etymology

Formed as a compound of 'mouth' and 'piece'. It first appeared in the 17th century referring to the part of a musical instrument placed to the lips. The figurative sense of a spokesperson emerged in the late 18th century.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Mouthpiece. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/mouthpiece
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