Main Entry: flue

Pronunciation: \ˈflü\

Function: noun

Etymology: origin unknown

Date: 1582

: an enclosed passageway for directing a current: as a : a channel in a chimney for conveying flame and smoke to the outer air b : a pipe for conveying flame and hot gases around or through water in a steam boiler c : an air channel leading to the lip of a wind instrument d : flue pipe