n. Any apparatus used to facilitate the evaporation of the water contained in fruit, vegetable juices, saline liquids, glue, syrups, etc.; a furnace or pan used in condensing vegetable and other juices.n. A device for evaporating water into steam.n. A device, used in connection with gasolene-engines, to transform the liquid hydrocarbon into a gas or vapor by heat or by fine subdivision in a current of air.