Medical Dictionary

mouth breather

noun mouth breath·er \ -ˌbrē-t͟hər \

medical Definition of mouth breather

:a person who breathes mostly through the mouth rather than the nose
  • He suffered from a deviated septum and was a chronic mouth breather.
  • —Michael ChabonThe New Yorker8 May 1989

Seen and Heard

What made you want to look up mouth breather? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

spoken rather than written

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!