brain someone

Hit someone hard on the head. For example, The roof collapsed and a bunk of plaster brained him, or I'll brain you if you don't get to those dishes! This term is used both literally (first example) and hyperbolically (second example). [Slang; 1930s]


Nearby words

  1. brain gain,
  2. brain hormone,
  3. brain mantle,
  4. brain sand,
  5. brain scan,
  6. brain stem,
  7. brain sugar,
  8. brain swelling,
  9. brain teaser,
  10. brain trust

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.