Main line
Main line noun - The principal route of a transportation system.
Trunking
Mutual synonyms
Cite this Source
Trunking and Main line. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/main_line/trunking
Main line & Trunking. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/main_line/trunking>.
Trunking or Main line. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/main_line/trunking.
Google Ngram Viewer shows how "main line" and "trunking" have occurred on timeline