What does glazing mean?
Glazing is a cooking term that means to create a glazed surface on food.
A fruit tart can be glazed by brushing it with warm, strained jam or jelly. Vegetables can be glazed by cooking them with a small amount of water, butter and sugar, which coats them in a thick, glossy sauce; or simply by brushing them with melted butter once they're cooked to give them a shiny surface.
A stock glaze is a syrupy meat, poultry or fish stock that's reduced to concentrate the flavor; glazes are then added to sauces or used to baste dishes browning in the oven.