rack brain

rack (one's) brain(s)

To struggle to recall or think of something. I've been racking my brain, but I still can't remember what Lydia's husband's name is. He racked his brains all weekend trying to think of a solution to the problem.

rack one's brain(s)

Fig. to try very hard to think of something. I racked my brains all afternoon, but couldn't remember where I put the book. Don't waste any more time racking your brain. Go borrow the book from the library.

rack (one's) brain

Informal

To think long and hard: I racked my brain for hours trying to recall her name.

rack one's brain, to

To strain to remember something or discover a solution. The rack here is the medieval instrument of torture on which the victim’s body was stretched until it broke. The idea is old; “we break our brains for naught” comes from 1530. The word “rack” came into use about 150 years later.

词组	rack brain
释义	rack brain rack (one's) brain(s) To struggle to recall or think of something. I've been racking my brain, but I still can't remember what Lydia's husband's name is. He racked his brains all weekend trying to think of a solution to the problem. See also: rack Farlex Dictionary of Idioms. rack one's brain(s) Fig. to try very hard to think of something. I racked my brains all afternoon, but couldn't remember where I put the book. Don't waste any more time racking your brain. Go borrow the book from the library. See also: brain, rack McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. rack (one's) brain Informal To think long and hard: I racked my brain for hours trying to recall her name. See also: brain, rack American Heritage® Dictionary of the English Language, Fifth Edition. rack one's brain, to To strain to remember something or discover a solution. The rack here is the medieval instrument of torture on which the victim’s body was stretched until it broke. The idea is old; “we break our brains for naught” comes from 1530. The word “rack” came into use about 150 years later. See also: rack The Dictionary of Clichés by Christine Ammer See also: rack (one's) brain(s) rack brains rack one's brain rack your brains wrack (one's) brain(s) wrack brains rack one's brain, to brains cudgel (one's) brains cudgel your brain
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