zhǒu
elbow
Originally written similar to 九, which depicts an elbow. Later the ⺼ (meat, flesh) component was added.
Components
Evolution

Oracle script
(~1250-1000 BC)
Seal script
Chu (Warring States: 475-221 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Qin dynasty (221-206 BC)Regular script
ModernDefinitions
Sources