ungula

noun4

1. •
   (old-fashioned) A hoof, claw, or talon.
2. •
   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. •
   Synonym of claw (“slender appendage or process at the base of a petal”).
4. •
   A surgical instrument for use in removing a dead fetus.