44 entries under noun topic. ×
| tube(line, track, underground, railway) | |
| subway(line, track, underground, railway) | |
| underground(subway, subversives) | |
| railroad(line, track, network, reticulation) | |
| rail line(expression, line, track, railway) | |
| railway(line, track, subway) | |
| subway system | |
| elevated railway(expression, line, track, railway) | |
| line(track, railway, subway) | |
| monorail(line, track, network, railway) | |
| rail(line, track) | |
| streetcar line(expression, line, track, railway) | |
| track | |
| trolley line(expression, line, track, railway) | |
| hose | |
| resistance | |
| tracks(line, track, network, railway) | |
| train line(expression, line, track, railway) | |
| tubing | |
| underground railroad(expression, idiom) |
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| APA | Smart Define. (2015). metro thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/metro/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "metro thesaurus" https://smartdefine.org/metro/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, metro thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/metro/thesaurus/synonyms>. |
| MLA | Smart Define. "metro thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/metro/thesaurus/synonyms> |