noun, plural chimneys.
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.
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.
verb (used with object), chimneyed, chimneying.
Mountain Climbing. to ascend or descend (a chimney) by repeated bracing of one's feet or back and feet against opposite walls.
verb (used without object), chimneyed, chimneying.
Mountain Climbing. to ascend or descend a chimney.

1300–50; Middle English chimenai < Middle French cheminee < Latin (camera) camīnāta (room) having a fireplace, equivalent to camīn(us) (< Greek kámīnos furnace) + -āta -ate1

chimneyless, adjective
chimneylike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chimney (ˈtʃɪmnɪ)
1.  a vertical structure of brick, masonry, or steel that carries smoke or steam away from a fire, engine, etc
2.  another name for flue
3.  short for chimney stack
4.  an open-ended glass tube fitting around the flame of an oil or gas lamp in order to exclude draughts
5.  (Brit) a fireplace, esp an old and large one
6.  geology
 a.  a cylindrical body of an ore, which is usually oriented vertically
 b.  the vent of a volcano
7.  mountaineering a vertical fissure large enough for a person's body to enter
8.  anything resembling a chimney in shape or function
[C14: from Old French cheminée, from Late Latin camīnāta, from Latin camīnus furnace, from Greek kaminos fireplace, oven]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

c.1280, from O.Fr. cheminee "fire place," from L.L. caminata "fireplace, room with a fireplace," from L. caminatus, adj. of caminus "hearth, oven, flue," from Gk. kaminos "furnace."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
chimney   (chĭm'nē)  Pronunciation Key 
  1. An elongated opening in a volcano through which magma reaches the Earth's surface.

  2. A stack of minerals that have precipitated out of a hydrothermal vent on the floor of a sea or ocean. See more at hydrothermal vent.

  3. An isolated column of rock along a coastline, formed by the erosion of a sea cliff by waves. Chimneys are smaller than stacks.

The American Heritage® Science Dictionary
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