flue
Pronunciation:
/fluː//fljuː/noun
Definitions
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.
A woolly or downy substance; down, nap; a piece of this.
In an organ flue pipe, the opening between the lower lip and the languet.