O / ossĭcŭlum
noun

ossĭcŭlum

gen. ossĭcŭli · gender neuter · decl. 2nd
a small bone; ossicle
a small bone, ossicle (post-Aug.), Plin. 11, 37, 49, § 134; Gell. 6, 1, 10: MEA (al. OSSVCVLA), Inscr. Fabr. p. 420, n. 381.