noun
- An electric railway operating below the surface of the ground (usually in a city. )
- usage: "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
- synonyms: metro, tube, underground, subway
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). subway system. Retrieved September 21, 2026, from http://smartdefine.org/subway_system/definitions/1313900 |
| Chicago | WordNet. 2010. "subway system" http://smartdefine.org/subway_system/definitions/1313900 (accessed September 21, 2026). |
| Harvard | WordNet 2010, subway system, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/subway_system/definitions/1313900>. |
| MLA | WordNet. "subway system" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/subway_system/definitions/1313900> |