绞
尽
脑
汁
j
i
ǎ
o
j
ì
n
n
ǎ
o
z
h
ī
Definitions
1. to rack one's brains
Components
绞
jiǎo
–
to twist (strands into a thread)
尽
jìn
–
to use up
脑汁
nǎo zhī
–
brains