Source : Webster's Revised Unabridged Dictionary (1913)

Rooky \Rook"y\ (-[y^]), a. [See {Roky}.]
   Misty; gloomy. [Obs.]

         Light thickens, and the crow Makes wing to the rooky
         wood.                                    --Shak.

   Note: Some make this Shakespearean word mean ``abounding in
         rooks.''