2. (Zo["o]l.) One of the terminal hooks on the foot of an
insect.
3. (Bot.) The slender base of a petal in some flowers; a
claw; called also {ungula}.
2. (Geom.) A section or part 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. (Bot.) Same as {Unguis}, 3.
{Spherical ungula} (Geom.), a part of a sphere bounded by two
planes intersecting in a diameter and by a line of the
surface of the sphere.