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Definition of brain-teaser noun from the Oxford Advanced Learner's Dictionary

brain-teaser

noun

/ˈbreɪn tiːzə(r)/

/ˈbreɪn tiːzər/

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a problem that is difficult but fun to solve
- There were some real brain-teasers in the quiz.
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See brain-teaser in the Oxford Advanced American Dictionary

Check pronunciation: brain-teaser

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