胸骨

胸骨	xiōng gǔ	sternum / breastbone
胸	xiōng	variant of 胸
胸	xiōng	chest / bosom / heart / mind / thorax
骨	gū	used in 骨碌碌 / used in 骨碌 / used in 骨朵
骨	gǔ	bone