| chimney(noun, opening, beam, tunnel) | |
| vent(noun, opening, beam, tunnel) | |
| duct(noun, opening, beam, fan, vent) | |
| tunnel(noun, opening, beam, duct) | |
| conduit(noun, beam, tunnel, pipe) | |
| hole(noun, opening, beam, fan, vent) | |
| arrow(beam, tunnel) | |
| axis(noun, beam, tunnel, duct) | |
| axle(noun, beam, tunnel, duct) | |
| bar(beam, tunnel) | |
| barb(noun, beam, tunnel, duct) | |
| beam | |
| column(noun, beam, tunnel, duct) | |
| cylinder(beam, tunnel) | |
| diaphysis(noun, beam, tunnel, duct) | |
| handle(beam, tunnel) | |
| helve(noun, beam, tunnel, duct) | |
| lance(beam, tunnel) | |
| missile(beam, tunnel) | |
| monolith(noun, beam, tunnel, duct) |
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| APA | Smart Define. (2015). flue thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/flue/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "flue thesaurus" https://smartdefine.org/flue/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, flue thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/flue/thesaurus/synonyms>. |
| MLA | Smart Define. "flue thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/flue/thesaurus/synonyms> |