Rahway (rôˈwā) [key], industrial city (1990 pop. 25,325), Union co., NE N.J., on the Rahway River; settled by 1680 as Rawack (then part of Elizabethtown; see Elizabeth), inc. 1858. Plastics, clothing, pharmaceuticals, and electrical equipment are among the city's manufactures. The British were routed in skirmishes there in 1777. One of the signers of the Declaration of Independence and 42 Revolutionary soldiers are buried in the Rahway cemetery.