Any of various thin shiny (savory or sweet) coatings applied to foods WordNet 3.0 & Open English WordNet

In cooking, a glaze is a glossy, translucent coating applied to the outer surface of a dish by dipping, dripping, or using a brush. Wikipedia

A coating of a glossy, often sweet, mixture applied to food Wikipedia Disambiguation

A coating of ice, generally clear and smooth but usually containing some air pockets, formed on exposed objects by the freezing of a film of supercooled water deposited by rain, drizzle, or fog, or possibly condensed from supercooled water vapour. OmegaWiki

A smooth edible coating applied to food. Wiktionary

Edible coating. Wiktionary (translation)