wrack (one's) brain(s)

wrack (one's) brain(s)

To struggle very hard to recall or think of something. ("Rack" is considered the more correct spelling, though "wrack" has become acceptable through common usage.) I've been wracking my brain, but I still can't remember what Lydia's husband's name is. He wracked his brains all weekend trying to think of a solution to the problem.
See also: wrack
Farlex Dictionary of Idioms.

wrack (one's) brains

/brain
To try hard to remember or think of something.
See also: brain, wrack
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • wrack brains
  • rack (one's) brain(s)
  • rack brain
  • rack brains
  • rack one's brain
  • rack your brains
  • put a name to
  • put a name to (someone or something)
  • put a name to somebody/something
  • block on (something)