Crossword clues for N. Y. subway 3 letters:IRTN. Y. subway system: Abbr.IRTN. Y. subway line.IRTN. Y. subwayIRTN. Y. subway line: Abbr.IRTSubway in N. Y. City Transit System.BMTPart of the N. Y. C. subway.IRTN. Y. C. subway, for short.BRTOne of N. Y.'s subways.IRTPart of N. Y. C.'s subway system.INDPart of N. Y. C.'s subway system.IRTOldest subway system in N. Y. C.IRTSubway system of N. Y. C.PARSONSEngineer of N. Y. C. subways (1859–1932).