rack one's brain

English

Alternative forms

Etymology

Combination of rack (medieval torture method), and brain, thus meaning “to cause the mind extreme discomfort”.

Variants include rack one's wit (1583) and rack one's memory,[1] as well as cudgel one's brain / cudgel one's brains.

Verb

rack one's brain

  1. (idiomatic) To struggle to think of or remember something.
    I have been racking my brain all day trying to think of a birthday present for her.

Translations

References

  1. Michael Quinion (2011-11-19), “Wrack or rack?”, in World Wide Words
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