Main line
Main line noun - The principal route of a transportation system.
Trunk route and main line are semantically related. In some cases you can use "Trunk route" instead a noun phrase "Main line".
Trunk route
Trunk route noun - Line that is the main route on a railway.
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Synonyms for Trunk route
Main line and trunk route are semantically related. You can use "Main line" instead a noun phrase "Trunk route".
Mutual synonyms
Cite this Source
Trunk route and Main line. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/main_line/trunk_route
Main line & Trunk route. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/main_line/trunk_route>.
Trunk route or Main line. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/main_line/trunk_route.
Google Ngram Viewer shows how "main line" and "trunk route" have occurred on timeline