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 a current of air or other gases along.
(obsolete, countable and uncountable) 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.
adjective
(UK, dialect) Alternative form of flew (“shallow, flat”).