Hoof, claw or nail

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Unguis \Un"guis\, n.; pl. Ungues . [L., nail, claw, or hoof.] The nail, claw, talon, or hoof of a finger, toe, or other appendage. (Zo["o]l.) One of the terminal hooks on the foot of an insect. (Bot.) The slender base of a petal in some flowers; a claw; ...

Wiktionary Word definitions in Wiktionary
n. 1 A hoof, claw, or talon. 2 (context geometry English) A section of a cylinder, cone, or other solid of revolution, cut off by a plane oblique to the base; so called from its resemblance to the hoof of a horse. 3 (context botany English) (alternative ...

Wikipedia Word definitions in Wikipedia
In solid geometry , an ungula is a section or part of a cylinder , cone , or other solid of revolution , cut off by a plane oblique to its base. A common instance is the spherical wedge . The term ungula refers to the hoof of a horse , an anatomical feature ...