noun. A hoof, claw, or talon.

noun. 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.

noun. Alternative form of unguis.

"Onomatopœia is the suiting of sound to sense; as, -- quadrupedante putrem sonitū quatit ungula campum, '_And shake with horny hoofs the solid ground_.'"