brainteaser

US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈbreɪnˌtizɚ/ ,USA pronunciation: respelling(brān′tē′zər)


WordReference Random House Learner's Dictionary of American English © 2026
brain•teas•er /ˈbreɪnˌtizɚ/USA pronunciation   n. [countable]
  1. a puzzle whose solution requires thought.

WordReference Random House Unabridged Dictionary of American English © 2026
brain•teas•er  (brān′tē′zər),USA pronunciation n. 
  1. a puzzle or problem whose solution requires great ingenuity.
  • brain + tease + er1 1920–25

Collins Concise English Dictionary © HarperCollins Publishers::
brain-teaser, brain-twister
  1. a difficult problem

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