A flue is a pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Historically the term flue meant the chimney …

The meaning of FLUE is an enclosed passageway for directing a current.

FLUE definition: 1. a pipe that leads from a fire or heater to the outside of a building, taking smoke, gases, or…. Learn more.

A flue is a pipe or long tube that acts as a chimney, taking smoke away from a device such as a heater, fire, or cooker. The chimney flues were repaired and relined.

Definition of flue noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Discover everything about the word "FLUE" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases, as from a fireplace, oven, furnace, boiler or steam generator.

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flue conduit for smoke, as in a fireplace: Be sure to open the flue before lighting the fire.

Dec 29, 2025 · flue (plural flues) A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace). quotations