12
tube(noun, line, track, underground, railway)
11
subway(noun, line, track, underground, railway)
11
underground(noun, subway, subversives)
4
electric railway
3
railroad(noun, line, track, network, reticulation)
3
rail line(noun, expression, line, track, railway)
3
railway(noun, line, track, subway)
3
subway system
2
big-city newspaper department(expression, idiom)
2
choo-choo
2
electric train
2
elevated railway(noun, expression, line, track, railway)
2
line(noun, track, railway, subway)
2
monorail(noun, line, track, network, railway)
2
rail(noun, line, track)
2
streetcar line(noun, expression, line, track, railway)
2
track(noun, line)
2
trolley line(noun, expression, line, track, railway)
1
baggage train
1
bygone geo model(expression, idiom)
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APASmart Define. (2015). metro thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/metro/thesaurus/synonyms
ChicagoSmart Define. 2015. "metro thesaurus" https://smartdefine.org/metro/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, metro thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/metro/thesaurus/synonyms>.
MLASmart Define. "metro thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/metro/thesaurus/synonyms>