Source : Webster's Revised Unabridged Dictionary (1913)

Bevel \Bev"el\, a.
   1. Having the slant of a bevel; slanting.

   2. Hence: Morally distorted; not upright. [Poetic]

            I may be straight, though they themselves be bevel.
                                                  --Shak.

   {A bevel angle}, any angle other than one of 90[deg].

   {Bevel wheel}, a cogwheel whose working face is oblique to
      the axis. --Knight.