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Short for booby. The noun sense "fool" dates to 1909, while the noun sense "breast" dates to 1945.



boob (plural boobs)

  1. (informal, pejorative) Idiot, fool.
    • 1914, George Vere Hobart, Boobs, as Seen by John Henry, OCLC 14521032, page 75:
      Not having an ear for music it annoys me to hear the boobs squeal.
  2. (slang) A breast, especially that of a human adult or adolescent female.
    • 1945, James T Farrell, Judgement Day, OCLC 186789080, page 314:
      Tough luck. Too quick in covering to let them see her boobs.
    • 1974, Ernest Brawley, The Rap, page 256:
      Her boob had fallen out of her nightgown and now lay limp against the stained sheet.
    • 2013, book cover for Mommy Has a Boo Boo in Her Boob by Kim Haskan
      Mommy Has a Boo Boo in Her Boob was written to help families who have been affected by breast cancer.



boob (not comparable)

  1. (informal, pejorative) Idiotic, foolish.
    • 1971, Robert Beck, The Naked Soul of Iceberg Slim, ISBN 0870674145, page 220:
      Brother, to survive we must strip our total beings of any boob black bourgeoisie values and creampuff attitudes toward the horror in America which we might have absorbed.


boob (third-person singular simple present boobs, present participle boobing, simple past and past participle boobed)

  1. To behave stupidly; to act like a boob.
    • 1969, Colin Watson, The Flaxborough Chronicle, OCLC 26730196, page 250:
      After three hits his cleverness ran out. He boobed.
  2. (informal, intransitive) To make a mistake
    • 1969, “Alchemy”, in The Canadian Forum, volume 49, page 211:
      ...the younger generation will not altogether be grateful for the book in which they are contained — especially when he boobs in calling the Weavers a rock ensemble.