rack brains

rack your brains

also rack your brain

to try very hard to remember or think of something She racked her brains for a subject they could discuss without an argument.

/brain

To try hard to remember or think of something.

Name	Pronounced	Usage
Ab	[æb]
Adebowale	-	Western African, Yoruba
Timaios	-	Ancient Greek, Biblical Greek
&Thorn;ÓRbjÖRn	-	Ancient Scandinavian
Mojisola	-	Western African, Yoruba
Jaroslav	-	Czech, Slovak