Zool. Pl. uncini. [L. uncīnus, f. uncus hook.] A hook-shaped part or process; esp. one of the hook-like teeth of molluscks.
1851. S. P. Woodward, Mollusca, I. 113. Lingual dentition like murex erinaceus; teeth transverse, 3 crested; uncini small, simple.
1859. J. R. Greene, Man. Anim. Kingd., I. Protozoa, 67. The setæ or ciliary bristles of Oxytricha, the uncini (hooks) and styles of Euplotes.
1878. Bell, trans. Gegenbaurs Comp. Anat., 360. The outermost uncini of the transverse rows may also be articulated.