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. [[File:Ungula (PSF).png|thumb|]]
Alternative form of unguis
A surgical instrument for use in removing a dead fetus.
Etymology
Borrowed from Latin ungula (“claw, hoof”), from unguis (“nail, claw, hoof”).