to beat one's brains out
01
to try one's best in order to solve a problem or to understand it
![to [beat] {one's} brains out definition and meaning](https://cdn.langeek.co/photo/29665/original/?type=jpeg "to [beat] {one's} brains out definition and meaning")
Idiom
Informal
例
He's been beating his brains out trying to finish that project on time.
She beat her brains out studying for the exam, but it was just too difficult.
