| 1. | a sweet mixture, cooked or uncooked, for coating or filling cakes, cookies, and the like; icing. |
| 2. | a dull or lusterless finish, as on metal or glass. |
| 3. | a process of highlighting the hair by bleaching selected strands. |
| 4. | a material used for decorative work, as signs, displays, etc., made from coarse flakes of powdered glass. |
| 5. | the frosting on the cake, something added to make a thing better or more desirable. Also, icing on the cake. |
ic·ing (ī'sĭng) n.
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icing on the cake
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icing on the cake
Also, frosting on the cake. An additional benefit to something already good. For example, All these letters of congratulation are icing on the cake, or After that beautiful sunrise, the rainbow is just frosting on the cake. This metaphoric expression alludes to the sweet creamy coating used to enhance a cake. [Mid-1900s]