Definitions:
fit panes of glass into (a window or door frame or similar structure)

overlay or cover (food, fabric, etc.) with a smooth, shiny coating or finish

lose brightness and animation

a vitreous substance fused on to the surface of pottery to form an impervious decorative coating.

a liquid such as milk or beaten egg used to form a smooth, shiny coating on food

a thin, glassy coating of ice on the ground or water.