what is tray
Freebase(0.00 / 0 votes)Rate this definition: Tray. A tray is a shallow platform designed for carrying things. It can be fashioned from numerous materials, including silver, brass, sheet iron, wood, melamine, and papier-mÃ¢chÃ©. Some examples have raised galleries, handles, and short feet for support. Trays are flat, but with raised edges to stop things from sliding off of them.