HBHthe outer bone of the two bones in your leg below your knee 腓骨 →5see picture at 见图skeleton
Examples from the Corpus
fibula• Now he is facing his toughest fight yet - back to fitness after suffering a fractured fibula and damaged ankle ligaments.• Blood had congealed thickly on the end of the smashed fibula.
Originfibula
(1500-1600)Latin“piece of jewelry for fastening clothes” (because of the shape of the two bones)