The Collaborative International Dictionary of English v.0.48:

Hone \Hone\, n. [AS. h[=a]n; akin to Icel. hein, OSw. hen; cf.
   Skr. [,c][=a][.n]a, also [,c][=o], [,c]i, to sharpen, and E.
   cone. [root]38, 228.]
   A stone of a fine grit, or a slab, as of metal, covered with
   an abrading substance or powder, used for sharpening cutting
   instruments, and especially for setting razors; an oilstone.
   --Tusser.
   [1913 Webster]

   Hone slateSee Polishing slate.

   Hone stone, one of several kinds of stone used for hones.
      See Novaculite.
      [1913 Webster]