chimney
noun
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.
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Then came the noise of brushwood being removed, and a block and tackle were lowered through the chimneylike aperture.
From A Lad of Grit A Story of Adventure on Land and Sea in Restoration Times by Percy F. (Percy Francis) Westerman