icing

US /ˈaɪ.sɪŋ/
UK /ˈaɪ.sɪŋ/
"icing" picture
1.

a mixture of sugar with liquid or butter, typically flavored and colored, used as a coating for cakes or cookies.

:
The cake was covered with a thick layer of vanilla icing.
She carefully piped the decorative icing onto the cupcakes.
2.

the action of covering something with icing.

:
The final step in cake decoration is the icing.
She spent hours on the intricate icing of the wedding cake.