costal cartilage

English Thesaurus

1. the cartilages that connect the sternum and the ends of the ribs; its elasticity allows the chest to move in respiration (noun.body)

hypernym	:	cartilaginous structure,
definition	:	body structure given shape by cartilage (noun.body)

part meronym	:	costa, rib,
definition	:	any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates) (noun.body)