13
chimney(noun, opening, beam, tunnel, rod)
11
vent(noun, opening, beam, tunnel, rod)
11
funnel(noun, opening, airpipe, smoke-stack)
10
shaft(noun, opening, something, vent, tunnel)
8
smokestack(noun, opening, pipe, chimney, funnel)
8
stack(noun, opening, fan, vent, pipe)
7
flue pipe(noun, expression, idiom)
5
duct(noun, opening, beam, fan, vent)
4
cobweb(uncleanness, levity)
4
dust(uncleanness, levity)
4
passage(noun, opening, pipe)
4
air
4
channel(noun, opening, pipe)
4
down
4
feather
4
labial pipe(noun, expression, idiom)
4
pipe(noun, opening, fan, shaft, vent)
4
tube(noun, opening, pipe, airpipe)
3
blowhole(noun, airpipe)
3
bubble
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APASmart Define. (2015). flue thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flue/thesaurus/synonyms
ChicagoSmart Define. 2015. "flue thesaurus" https://smartdefine.org/flue/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, flue thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flue/thesaurus/synonyms>.
MLASmart Define. "flue thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/flue/thesaurus/synonyms>