n. One that burns, especially:n. A device, as in a furnace, stove, or gas lamp, that is lighted to produce a flame.n. A device on a stovetop, such as a gas jet or electric element, that produces heat.n. A unit, such as a furnace, in which something is burned: an oil burner. n. An incinerator.n. Slang An elaborate mural painted by a graffiti artist, usually on the wall of an abandoned building.n. Slang A large, multicolored graffito.idiom. on the back burner As a low priority: kept the project on the back burner all summer. idiom. on the front burner As a high priority.