Flue

/fluː/

Meaning & Definition

noun
A duct, pipe, or channel for conveying exhaust gases from an appliance to the outside atmosphere.
The chimney's flue was blocked, causing smoke to fill the living room.
A tube or passage in a chimney, furnace, or other structure that directs smoke or gases.
The flue must be cleaned regularly to ensure proper ventilation.
A pipe for conveying hot air or smoke to a chimney.
To maintain efficiency, the flue needs to be inspected annually.

Etymology

Middle English 'flue', from Old French 'flue', a variant of 'flus', meaning 'to flow'.

Common Phrases and Expressions

clean the flue
To remove blockages or soot from a flue.
flue gas
The gas produced from combustion that exits through the flue.
flue liner
A lining that protects the walls of a flue.

Related Words

chimney
A vertical structure that provides a passage for smoke and gases to escape.
ventilator
A device or opening that allows air to circulate.
exhaust
Gases expelled from an engine or other machine.

Slang Meanings

In slang, 'flue' can refer to a situation that's going awry.
If things keep going like this, we're in a complete flue.