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English definition of “rack your brains”

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rack your brains

UK ( US rack your brain)
to think very hard: I've been racking my brains all day but I can't remember her name.
Translations of “rack your brains”
in Chinese (Traditional) 絞盡腦汁, 搜腸刮肚…
in Chinese (Simplified) 绞尽脑汁, 搜肠刮肚…
(Definition of rack your brains from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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