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Definition of flue

flue

/fluː/
flue

Plural:flues
•
Adjective:flueless
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flue Lexical Profile

flue Game Scores & Validity

• noun

1

A duct, pipe, or enclosed passage inside a chimney or furnace that conveys smoke, exhaust gases, and heat from a fireplace, boiler, or stove to the outdoors.

Example

"Before lighting the first fire of winter, the homeowner hired a sweep to inspect the chimney and clear the flue of any accumulated soot."


2

The narrow air passage or windway in an organ pipe through which a stream of air is directed against a sharp edge to produce musical sound.

Example

"The organ builder carefully adjusted the width of the flue to ensure the pipe produced a clear, resonant tone."


3

Soft down, lint, fluff, or fine loose hair.

Example

"A thin layer of dusty flue had gathered beneath the antique wardrobe."

Synonyms
View all synonyms for flue

Word Nuance & Usage

Do not confuse 'flue' (a chimney duct) with its homophones 'flu' (influenza) and 'flew' (the past tense of 'fly').

• Rhymes for flue

Word Origin & Etymology

First recorded in the late 16th century; of uncertain origin, possibly from Old French 'fluer' (to flow), from Latin 'fluere', or from Middle Low German 'vloge' (a chimney duct).

Cite this Entry


Wordmom. (2026). Definition of Flue. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/flue
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