भूमिगत मार्ग — subway (Noun)
तलमार्ग — subway (Noun)
भूमिगत रेल — subway (Noun)
अन्तर्भूमार्ग — subway (Noun)
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Subway — An underground way or gallery; especially, a passage under a street, in which water mains, gas mains, telegraph wires, etc., are conducted.