peroneus
/ˌpɛrə(ʊ)ˈniːəs/(also peronaeus) Anatomy and Zoology
noun
More fully peroneus muscle, †muscle peroneus. Any of several muscles of the lateral side of the leg, which arise from the fibula and act to move the foot.
Origin
Mid 17th century; earliest use found in Alexander Read (1586?–1641). From post-classical Latin peroneus from ancient Greek περόνη + classical Latin -eus.