\Cone\, n. [L. conus cone (in sense 1), Gr. ?; akin to Skr.
[,c]ana whetstone, L. cuneus wedge, and prob. to E. hone. See
{Hone}, n.]
1. (Geom.) 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.
2. Anything shaped more or less like a mathematical cone; as,
   a volcanic cone, a collection of scori[ae] around the
   crater of a volcano, usually heaped up in a conical form.
         Now had Night measured with her shadowy cone Half
         way up hill this vast sublunar vault. --Milton.
3. (Bot.) The fruit or strobile of the {Conifer[ae]}, as of
   the pine, fir, cedar, and cypress. It is composed of woody
   scales, each one of which has one or two seeds at its
   base.
4. (Zo["o]l.) A shell of the genus {Conus}, having a conical
   form.
{Cone of rays} (Opt.), the pencil of rays of light which
   proceed from a radiant point to a given surface, as that
   of a lens, or conversely.
{Cone pulley}. See in the Vocabulary.
{Oblique} or {Scalene cone}, a cone of which the axis is
   inclined to the plane of its base.
{Eight cone}. See {Cone}, 1.

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