ossiculum 小骨
os·sic·u·lum /əˈsɪkjələm/ 名詞 (複ossicula)小骨,腋片
Os·sic·u·lum n.; pl. Ossicula Zool. Same as Ossicle. ◄ ►
ossiculum n : a small bone; especially one in the middle ear [syn: ossicle, bonelet]