Flue
WordNet
noun
(1) A conduit to carry off smoke
(2) Organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip
(3) Flat bladelike projection on the arm of an anchor
WiktionaryText
Noun
- A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace).
- An enclosed passageway in which to direct air or other gaseous current along.