fib·u·la
noun/ˈfɪbjələ/
/ˈfɪbjələ/
(plural fibulae
(anatomy)/ˈfɪbjəliː/
/ˈfɪbjəliː/
, fibulas)- the outer bone of the two bones in the lower part of the leg between the knee and the ankle

enlarge image see also tibiaTopics Bodyc2腓骨 Word Originlate 16th cent.: from Latin, ‘brooch’, perhaps related to figere ‘to fix’. The bone is so named because the shape it makes with the tibia resembles a clasp, the fibula being the pin.