Definitions of metro

n 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'”
subway, subway system, tube, underground
Type of:
railroad, railroad line, railway, railway line, railway system
line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight

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