資料來源 : Webster's Revised Unabridged Dictionary (1913)

Cone \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.