腓ひ骨こつ

noun

fibula

Anatomical term for the thinner of the two bones in the lower leg.

• 腓ひ骨こつは脛けい骨こつの外そと側がわにある細ほそい骨ほねです。

  The fibula is the thin bone on the outer side of the tibia.

noun which may take the genitive case particle 'no'

fibular; peroneal

Adjectival use in anatomical contexts, often modifying terms like 神経 (nerve) or 動脈 (artery).

• 腓ひ骨こつ神しん経けいは膝ひざの外そと側がわを通とおっています。

  The peroneal nerve runs along the outer side of the knee.