The Collaborative International Dictionary of English v.0.48:

Rooky \Rook"y\ (-[y^]), a. [See Roky.]
   Misty; gloomy. [Obs.]
   [1913 Webster]

         Light thickens, and the crow
         Makes wing to the rooky wood.            --Shak.
   [1913 Webster]

   Note: Some make this Shakespearean word mean "abounding in
         rooks."
         [1913 Webster]