- fenestra
[fenestra 词源字典]
- "A small natural hole or opening, especially in a bone. The mammalian middle ear is linked by the fenestra ovalis to the vestibule of the inner ear, and by the fenestra rotunda to the cochlea", Early 19th century (as a botanical term denoting a small scar left by the separation of the seed from the ovary): from Latin, literally 'window'.[fenestra etymology, fenestra origin, 英语词源]