Mouth breather

noun, slang

Definitions

Noun
  1. 1
    A person who routinely inhales and exhales through the mouth, instead of through the nose.

    "Respirations cannot be recorded by this method, if the subject is a mouth breather (as no air flows by the thermistor in the nose)."

  2. 2
    A person who is boorish, stupid, or otherwise unattractive. derogatory, idiomatic, slang

    "She's a philosophy major from Brown, now working retail at Niagara Falls, living in a trailer and working for a "mouth breather" of a boss."

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