Definition of: chimney

(chim′nē) noun
1. A flue for the smoke or gases from a fire.
2. A structure containing it, or something resembling such a structure.
3. A tube for enclosing a flame, as of a lamp.
4. Obs. A fireplace, hearth, or forge.
5. Geol. a A formation of rock shaped like a chimney; specifically, a cleft in a steep mountain cliff or rock wall, wide enough to admit a climber's body and which can be ascended by pressure against the opposite sides. b A long spur of ore extending downward through the main vein; a pipe. [<OF cheminée <LL caminata <L caminus furnace, oven <Gk. kaminos]