Ossicle

n.	1.	A little bone; as, the auditory ossicles in the tympanum of the ear.
	2.	(Zool.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.

Noun

1.

ossicle - a small bone; especially one in the middle ear Synonyms: bonelet, ossiculum

auditory ossicle, bone, bonelet, middle ear, os, ossiculum, tympanic cavity, tympanum