Source : Webster's Revised Unabridged Dictionary (1913)

Dapple \Dap"ple\, n. [Cf. Icel. depill a spot, a dot, a dog with
   spots over the eyes, dapi a pool, and E. dimple.]
   One of the spots on a dappled animal.

         He has . . . as many eyes on his body as my gray mare
         hath dapples.                            --Sir P.
                                                  Sidney.

Dapple \Dap"ple\, Dappled \Dap"pled\, a.
   Marked with spots of different shades of color; spotted;
   variegated; as, a dapple horse.

         Some dapple mists still floated along the peaks. --Sir
                                                  W. Scott.

   Note: The word is used in composition to denote that some
         color is variegated or marked with spots; as,
         dapple-bay; dapple-gray.

               His steed was all dapple-gray.     --Chaucer.

               O, swiftly can speed my dapple-gray steed. --Sir
                                                  W. Scott.

Dapple \Dap"ple\, v. t. [imp. & p. p. {Dappled}; p. pr. & vb. n.
   {Dappling}.]
   To variegate with spots; to spot.

         The gentle day, . . . Dapples the drowsy east with
         spots of gray.                           --Shak.

         The dappled pink and blushing rose.      --Prior.

Source : WordNet®

dapple
     n : a small contrasting part of something; "a bald spot"; "a
         leopard's spots"; "a patch of clouds"; "patches of thin
         ice"; "a fleck of red" [syn: {spot}, {speckle}, {patch},
         {fleck}, {maculation}]
     v : colour with streaks or blotches of different shades [syn: {mottle},
          {cloud}]