: an enclosed passageway for directing a current: such 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
Examples of flue in a Sentence
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Gases from the gasifier react with steam to produce hydrogen to fire the plant’s turbines and a pure stream of carbon dioxide that is far easier to capture than the diffuse CO2 in a conventional power plant’s flue gases.
—
Peter Fairley, IEEE Spectrum, 25 May 2012
Ensure the fireplace flue is open before lighting it.
—Nicole Villalpando, Austin American-Statesman, 12 Jan. 2024
Peoples Gas has been onsite multiple times over the winter and identified the boiler exhaust flue as a potential source of the sporadic smell, district officials said.
—Nell Salzman, Chicago Tribune, 27 Feb. 2025
But Chaplin lets in enough fresh air to make the reader care about things like flue innovations and the proliferation of affordable thermometers.
—Dan Piepenbring, Harper's Magazine, 19 Feb. 2025
See All Example Sentences for flue
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Peter Fairley, IEEE Spectrum, 25 May 2012
Ensure the fireplace flue is open before lighting it.
—Nicole Villalpando, Austin American-Statesman, 12 Jan. 2024
Peoples Gas has been onsite multiple times over the winter and identified the boiler exhaust flue as a potential source of the sporadic smell, district officials said.
—Nell Salzman, Chicago Tribune, 27 Feb. 2025
But Chaplin lets in enough fresh air to make the reader care about things like flue innovations and the proliferation of affordable thermometers.
—Dan Piepenbring, Harper's Magazine, 19 Feb. 2025
See All Example Sentences for flue
Cite this Entry
“Flue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flue. Accessed 6 Apr. 2025.
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flue
noun
: an enclosed passageway for directing a current
especially
: a channel in a chimney for carrying flame and smoke to the outer air
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