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