(0. E. cylene, from the Lat. culina, a kitchen, cookingstove), a place for burning, baking or drying. Kilns may be divided into two classes - those in which the materials come into actual contact with the flames, and those in which the furnace is beneath or surrounding the oven. Lime-kilns are of the first class, and brick-kilns, pottery-kilns, &c., of the second, which also includes places for merely drying materials, such as hop-kilns, usually called "oasts" or "oast-houses."