railroad siding(n = noun.artifact) sidetrack, siding, turnout - a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass;
is a kind of railroad, railroad track, railway

elevated railroad, railroad, railroad bed, railroad car, railroad engineer, railroad flat, railroad line, railroad man, railroad station, railroad terminal, railroad ticket, railroad tie, railroad track, railroad train, railroad tunnel, railroad vine, railroad worm, siding, underground railroad