English edit

Etymology edit

dirt +‎ brain

Noun edit

dirtbrain (plural dirtbrains)

  1. A person of low intelligence.
    Synonyms: see Thesaurus:fool
    • 1999, Brian Jacques, The Legend of Luke, Random House, →ISBN:
      'You won't break me, dirtbrain,' Ranguvar yelled as she was being dragged off.
    • 2000 June, Suzanne Brockmann, The Unsung Hero, Ballantine Books, →ISBN:
      Don't go there, dirtbrain.
    • 2002 April 27, firedancerflash, “OT: You all pray four us”, in alt.smokers.pipes[1] (Usenet):
      Bastian, dear, it hurts me to say this, but as the world gets smaller, so to speak, it gets easier and easier for dirtbrains to get ideas that they might never have thought of on their own.
    • 2003, John McNally, Bottom of the Ninth: Great Contemporary Baseball Short Stories, SIU Press, →ISBN, page 96:
      What kind of word is that, you dirtbrain?"