Frosting

Frost·ing

Frosting

n.
  1. A composition of sugar and beaten egg, used to cover or ornament cake, pudding, etc.
  2. A lusterless finish of metal or glass; the process of producing such a finish.
  3. the lightened color on part of an object, as of hair, produced by treatment with bleach or other chemicals; as only part of the object is thus treated, the final color of the object is two-toned; also, the process of producing such a two-toned effect.