From Longman Dictionary of Contemporary Englishrailway lineˈrailway line noun [countable] British English 1 
TTTthe two metal tracks fixed to the ground that trains move along SYN railroad track American English2 TTTa part of the railway system that connects two places SYN railroad line American English an old disused railway line
TTTthe two metal tracks fixed to the ground that trains move along SYN railroad track American English2 TTTa part of the railway system that connects two places SYN railroad line American English an old disused railway lineExamples from the Corpus
railway line• James was found dead beside a railway line in Liverpool after disappearing from a shopping precinct in Bootle last month.• But when she did come back, with her own children, the railway line had been closed.• It towered over the railway line and the makeshift station, a platform without a signboard.• My training is going very well apart from the slight hiccup with the railway line. 