jīn
muscles
Bamboo-like ⺮ tendons in the chest 肋
Evolution

Seal script
Shuowen (~100 AD)
Clerical script
Qin dynasty (221-206 BC)Regular script
ModernDefinitions
jīn
muscles; tendons; muscle; tendon; veins visible under the skin; sth resembling tendons or veins (e.g. fiber in a vegetable)
Sources