Source : Webster's Revised Unabridged Dictionary (1913)

Roan \Roan\, n.
   1. The color of a roan horse; a roan color.

   2. A roan horse.

   3. A kind of leather used for slippers, bookbinding, etc.,
      made from sheepskin, tanned with sumac and colored to
      imitate ungrained morocco. --DeColange.

   {Roan tree}. (Bot.) See {Rowan tree}.