30 entries under opening topic. ×
| pipe(noun, thing, course, drain) | |
| channel(noun, line, water, way, course) | |
| shaft(noun, thing, hole, channel) | |
| tunnel(noun, conduit, passageway, hose) | |
| canal(noun, line, way, drain) | |
| funnel(conduit, airpipe) | |
| main(noun, course, drain, means) | |
| passage(noun, line, way, course) | |
| flue(noun, pipe, airpipe) | |
| gully | |
| tap | |
| tubule | |
| water pipe(expression, idiom, conduit) | |
| adjutage | |
| passageway | |
| path | |
| smokestack | |
| thoroughfare | |
| vessel(noun, channel, cylinder, pipe) | |
| chimney |
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| APA | Smart Define. (2015). tube thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/tube/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "tube thesaurus" https://smartdefine.org/tube/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, tube thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/tube/thesaurus/synonyms>. |
| MLA | Smart Define. "tube thesaurus" 5 June 2015. Web. 20 September 2026. <https://smartdefine.org/tube/thesaurus/synonyms> |