- present participle of ice.
icing
Americannoun
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a sweet, creamy spread, as of confectioners' sugar, butter, and flavoring, for covering cakes, cookies, etc.; frosting.
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Meteorology. a coating of ice on a solid object.
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Aviation. the freezing of atmospheric moisture on the surface of an aircraft.
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Ice Hockey. the act of a player shooting the puck from the defensive half of the rink over the opponent's goal line, but not into the goal, as a defensive maneuver to keep the puck out of the reach of attacking opponents, resulting in a penalty against the defensive team if the puck is then next touched by an opponent other than the goalkeeper.
idioms
noun
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Also called (esp US and Canadian): frosting. a sugar preparation, variously flavoured and coloured, for coating and decorating cakes, biscuits, etc
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the formation of ice, as on a ship or aircraft, due to the freezing of moisture in the atmosphere
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any unexpected extra or bonus (esp in icing on the cake )
Etymology
Origin of icing
Explanation
Icing is the creamy, sweet stuff you use to frost a cake — you can also call it "frosting." Some people like the cake part of a cupcake, and others just like to lick off the icing. If you're over five, that's really not acceptable. Most icing consists of powdered sugar mixed with butter, margarine, cream cheese, or egg whites. In fact, in Britain, powdered sugar is called "icing sugar." Colloquially, you can describe something as the "icing on the cake," meaning it's not vital, but it's a positive addition: "After such a great day, finding that fifty dollar bill on the ground was just the icing on the cake!"
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The researchers compare this arrangement to chocolate chips embedded in a cookie, while organic dye molecules covering the outside resemble icing.
From Science Daily ● Sep. 20, 2026
Getting the color and appearance right for the icing on cupcakes alone required a nearly thirtyfold increase in natural ingredients.
From MarketWatch ● Sep. 16, 2026
It might also mean a thick slice of homemade apple Bundt cake under a generous coat of cream cheese icing, eaten with coffee.
From Salon ● Aug. 31, 2026
Any enrichment and information is icing on the cake.
From The Wall Street Journal ● Jun. 23, 2026
Malachite had made a birthday cake for her each year and even taught her how to pipe bright, glossy icing to spell out her name in a sugary cursive.
From "Pet" by Akwaeke Emezi
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.