icing

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A sweet glaze made of sugar, butter, water, and egg whites or milk, often flavored and cooked and used to cover or decorate baked goods, such as cakes or cookies.
• noun Sports A minor violation of the rules in ice hockey in which a player ices the puck, and the puck is not played by the goalie and does not go in the goal. Icing is not called when the team that has iced the puck is killing a penalty.
• idiom (icing on the cake) An additional benefit to something already good.

from The Century Dictionary.

• noun A coating of concreted sugar. Also called frosting and ice.

from the GNU version of the Collaborative International Dictionary of English.

• noun A coating or covering resembling ice, as of sugar and milk or white of egg; frosting.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A sweet glaze made primarily of sugar and often flavored, typically used for baked goods; frosting.
• noun ice hockey A minor violation of ice hockey rules, occurring when a player shoots the puck from his/her side of the red line so that it crosses the goal line on the opponent's side, and the next player to touch the puck is an opponent player other than the goalie. A team playing short-handed is not penalized for this.
• noun The process of forming a layer of ice on a surface.
• verb Present participle of ice.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the formation of frost or ice on a surface
• noun (ice hockey) the act of shooting the puck from within your own defensive area the length of the rink beyond the opponent's goal
• noun a flavored sugar topping used to coat and decorate cakes