A solid of the form described by the revolution of a
right-angled triangle about one of the sides adjacent to the right
angle; – called also a right cone. More generally, any solid having a
vertical point and bounded by a surface which is described by a
straight line always passing through that vertical point; a solid
having a circle for its base and tapering to a point or vertex.

Anything shaped more or less like a mathematical cone; as, a
volcanic cone, a collection of scoriae around the crater of a volcano,
usually heaped up in a conical form.

A shell of the genus Conus, having a conical form.

To render cone-shaped; to bevel like the circular segment
of a cone; as, to cone the tires of car wheels.