Lackawanna (lăkəwäˈnə) [key], city (1990 pop. 20,585), Erie co., W N.Y., on Lake Erie; inc. 1909. Formerly a major steel-making center, Lackawanna experienced the rapid and total decline of its foremost industry in the 1970s and 80s. Abrasives, chemicals, and concrete are produced there. A distinguished city landmark is the elaborate Basilica of Our Lady of Victory, a Roman Catholic shrine.