释义
n.
Anatomy & Zoology a very small bone, especially one of those in the middle ear
【剖, 动】 小骨(尤指听小骨)。
Zoology a small piece of calcified material forming part of the skeleton of an invertebrate animal such as an echinoderm
【动】 小骨片。
词源
"late 16th cent.: from Latin ossiculum, diminutive of os ‘bone’."