metal mouth

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English[edit]

Noun[edit]

metal mouth (plural metal mouths)

  1. (slang, derogatory) A person who wears orthodontic braces.
    • 1997, Jean Lee, Coping With Braces and Other Orthodontic Work, page 1:
      In fact, wearing braces is such a common experience today that the social stigma once attached to it ("Hey, metal mouth!") hardly exists anymore.