1) Hook-shaped 
shaped like a hook
• (n.) The unciform bone. See Illust. of Perissodactyla. • (a.) Having the shape of a hook; being of a curved or hooked from; hooklike.
(un´sĭ-form) uncinate (def. 1).
Type: Term Pronunciation: ŭn′si-fōrm Synonyms: uncinate
The unciform is a small bone in the human hand below the first finger.
unciform 1. Having the shape of a hook; being of a curved or hooked from; hooklike. 2. Unciform bone, a bone of the carpus (wrist) at the bases of the fourth and fifth metacarpals (five cylindrical bones extending from the wrist to the fingers); the hamatum (curved or hook-form).
hook-shaped.