坐骨

坐骨	zuò gǔ	ischium
坐	Zuò	surname Zuo
坐	zuò	to sit / to take a seat / to take (a bus, airplane etc) / to bear fruit / variant of 座
骨	gū	used in 骨碌碌 / used in 骨碌
骨	gǔ	bone