cudgel your brains这是旧式英国英语，意为苦苦思索解决问题的方法，冥思苦想，绞尽脑汁。

【例句】
I have been cudgel my brains for detainment you. However, everything is holdthe sun.
我曾绞尽脑汁想挽留住你, 可惜这一切只是徒劳。

I had to cudgel my brains to remember her name.
我不得不绞尽脑汁来记住她的名字。