Noun railroad line has 1 sense
  1. railway, railroad, railroad line, railway line, railway system - line that is the commercial organization responsible for operating a railway system
    --1 is a kind of line
    --1 has particulars:
     cable railway, funicular, funicular railway; cog railway, rack railway; elevated railway, elevated railroad, el, overhead railway; metro, subway, tube, underground; monorail; rail; scenic railway
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