smooth brain

English dictionary entry

Meanings

noun
  1. A stupid person.
  2. Used other than figuratively or idiomatically: see smooth, brain.

Word forms

smooth brain smooth brains smoothbrain

Etymology

Nominalization of smooth-brained, possibly by reference to lissencephaly (a brain abnormality, usually resulting in severe developmental delay, characterized by the surface of the brain being smooth), or simply by reference to the human brain typically being wrinkly.

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