1. (糕饼的)糖衣，糖霜
Icing is a sweet substance made from powdered sugar that is used to cover and decorate cakes.
2. 锦上添花之物
If you describe something as the icing on the cake, you mean that it makes a good thing even better, but it is not essential.
1. (ice hockey) the act of shooting the puck from within your own defensive area the length of the rink beyond the opponent's goal
Synonym: icing the puck
2. a flavored sugar topping used to coat and decorate cakes
3. the formation of frost or ice on a surface
Synonym: frost