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Definition of Subway system
1. Noun. An electric railway operating below the surface of the ground (usually in a city). "In Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
Exact synonyms: Metro, Subway, Tube, Underground
Generic synonyms: Railroad, Railroad Line, Railway, Railway Line, Railway System
Generic synonyms: Railroad, Railroad Line, Railway, Railway Line, Railway System
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