1) Leg bone 2) Pertaining to the fibula 
Peroneal refers to the lateral compartment of the leg. This Greek-derived medical term often refers to its well-known Latin analog, fibular. Peroneal can refer to: ...
• (a.) Of or pertaining to the fibula; in the region of the fibula.
(per″o-ne´әl) pertaining to the fibula or to the lateral aspect of the leg; fibular.
Per`o·ne'al adjective [ Greek ... the fibula.] (Anat.) Of or pertaining to the fibula; in the region of the fibula. 
Type: Term Pronunciation: per′ō-nē′ăl Synonyms: fibular1
[adj] - of or relating to the fibula or the outer part of the leg below the knee
perone, fibula.
adjective of or relating to the fibula or the outer part of the leg below the knee
adjective, Greek perone = clasp, brooch - see fibula.