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English definition of “brainteaser”

brainteaser

noun [C] uk   /ˈbreɪnˌtiː.zər/ us    /-zɚ/ (also teaser)
a problem for which it is hard to find the answer, especially one which people enjoy trying to solve as a game: The paper publishes two brainteasers every Saturday.Difficult things and peoplePreventing and impeding
(Definition of brainteaser from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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