Unguis \Un"guis\, n.; pl. {Ungues}. [L., nail, claw, or hoof.] 1. The nail, claw, talon, or hoof of a finger, toe, or other appendage. [1913 Webster] 2. (Zool.) One of the terminal hooks on the foot of an insect. [1913 Webster] 3. (Bot.) The slender base of a petal in some flowers; a claw; called also {ungula}. [1913 Webster]