fib·u·la 
(fĭbyə-lə)
(fĭbyə-lə)n. pl. fib·u·lae (-lē′) or fib·u·las
1.
a. The outer and narrower of two bones of the human lower leg, extending from the knee to the ankle.
b. The corresponding bone in the leg or hind limb of other vertebrates.
2. An often ornamented clasp or brooch used in ancient Greece and Rome to fasten clothes.
[Latin fībula, clasp, from fīgere, to fasten; see dhīgw- in the Appendix of Indo-European roots.]
fibulatop: bones of a human leg
bottom:7th-6th century bc bronze clasp
fibula