a structure, usually vertical, containing a passage or flue by which the smoke, gases, etc., of a fire or furnace are carried off and by means of which a draft is created.

the part of such a structure that rises above a roof.

Now Rare . the smokestack or funnel of a locomotive, steamship, etc.

a tube, usually of glass, surrounding the flame of a lamp to promote combustion and keep the flame steady.

Geology .

the vent of a volcano.

a narrow vertical fissure between two rock faces or in a rock formation.

Mining . a nearly vertical cylindrical oreshoot.

British Dialect . fireplace.

Mountain Climbing . to ascend or descend (a chimney) by repeated bracing of one's feet or back and feet against opposite walls.

Mountain Climbing . to ascend or descend a chimney.

noun

chase , chimney pot , chimney stack , fireplace , flue , funnel , furnace , hearth , pipe , smokeshaft , stack , vent , ventilator , gully , smokestack , tube