Main line
Main line noun - The principal route of a transportation system.
Rail route and main line are semantically related. In some cases you can use "Rail route" instead a noun phrase "Main line".
Rail route
Main line and rail route are semantically related. You can use "Main line" instead a noun phrase "Rail route".
Mutual synonyms
Cite this Source
Rail route and Main line. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/main_line/rail_route
Main line & Rail route. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/main_line/rail_route>.
Rail route or Main line. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/main_line/rail_route.
Google Ngram Viewer shows how "main line" and "rail route" have occurred on timeline