What is "unciform"

Unciform \Un"ci*form\, a. [L. uncus a hook + -form.] Having the shape of a hook; being of a curved or hooked from; hooklike.

Unciform bone (Anat.), a bone of the carpus at the bases of the fourth and fifth metacarpals; the hamatum.

Unciform \Un"ci*form\, n. (Anat.) The unciform bone. See Illust. of Perissodactyla.

a. Of the shape of a hook; hook-shaped. n. The hamate bone.