Source : Webster's Revised Unabridged Dictionary (1913)

Crackle \Crac"kle\ (kr[a^]k"k'l), v. i. [Dim. of crack.]
   To make slight cracks; to make small, sharp, sudden noises,
   rapidly or frequently repeated; to crepitate; as, burning
   thorns crackle.

         The unknown ice that crackles underneath them.
                                                  --Dryden.

Crackle \Crac"kle\, n.
   1. The noise of slight and frequent cracks or reports; a
      crackling.

            The crackle of fireworks.             --Carlyle.

   2. (Med.) A kind of crackling sound or r[^a]le, heard in some
      abnormal states of the lungs; as, dry crackle; moist
      crackle. --Quain.

   3. (Fine Arts) A condition produced in certain porcelain,
      fine earthenware, or glass, in which the glaze or enamel
      appears to be cracked in all directions, making a sort of
      reticulated surface; as, Chinese crackle; Bohemian
      crackle.

Source : WordNet®

crackle
     adj : having the surface decorated with a network of fine cracks,
           as in crackleware; "a crackle glaze"

crackle
     n 1: the sharp sound of snapping noises [syn: {crackling}, {crepitation}]
     2: glazed china with a network of fine cracks on the surface
        [syn: {crackleware}, {crackle china}]
     v 1: make a crackling sound; "My Rice Crispies crackled in the
          bowl" [syn: {crepitate}]
     2: make crunching noises; "his shoes were crunching on the
        gravel" [syn: {crunch}, {scranch}, {scraunch}]
     3: to become, or to cause to become, covered with a network of
        small cracks; "The blazing sun crackled the desert sand"