chimney

1. 1. A passage through which smoke and gases escape from a fire or furnace; a flue.
   2. The usually vertical structure containing a chimney.
   3. The part of such a structure that rises above a roof.
2. Chiefly British. A smokestack, as of a ship or locomotive.
3. A glass tube for enclosing the flame of a lamp.
4. Something, such as a narrow cleft in a cliff, resembling a chimney.

[Middle English chimenei, from Old French cheminee, from Late Latin camīnāta, fireplace, from Latin camīnus, furnace, from Greek kamīnos.]