a. [ L. uncus a hook + -form. ] Having the shape of a hook; being of a curved or hooked form; hooklike. [ 1913 Webster ]

Unciform bone (Anat.), a bone of the carpus at the bases of the fourth and fifth metacarpals; the hamatum. [ 1913 Webster ]

n. (Anat.) The unciform bone. See Illust. of Perissodactyla. [ 1913 Webster ]