Meaning of the word "rack your brain" in English

What does "rack your brain" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

rack your brain

US /ræk jʊər breɪn/
UK /ræk jʊər breɪn/
"rack your brain" picture

Idiom

1.

to think very hard to remember something or to find a solution to a problem

Example:
I had to rack my brain to remember her name.
We've been racking our brains all day trying to solve this puzzle.
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