Definition
To think very hard or struggle to remember something that one has forgotten.
绞尽脑汁
I had to cudgel my brains to remember where I had left my keys.
我不得不绞尽脑汁回想我把钥匙放在哪里。
He was cudgeling his brains to find an answer to the question.
他正绞尽脑汁寻找问题的答案。
She was cudgeling her brains to recall what happened last night.
她正绞尽脑汁回忆昨晚发生了什么事。