Main line
Main line noun - The principal route of a transportation system.
Mutual synonyms
Both terms in one sentence
- The Chuo Main Line takes another route to Nagoya, this one being the Nakasendo, through the rugged, mountainous Japanese Alps of central Honshu.
Source: Useful Notes / Tokyo Train Lines - The Chuo Linear Shinkansen, the world's first maglev line, will open in 2027 between Tokyo and Nagoya, but will take a more southerly route to Kofu than the current Chuo Main Line.
Source: Useful Notes / Tokyo Train Lines - In fact, though the railroad's route followed the old Santa Fe Trail, Santa Fe itself was only served by a branch line that was built as the main line was being extended towards the Pacific Ocean, and Kansas City displaced Atchison as the eastern terminus in the railroad's early years.
Source: Artifact Title / Real Life
Cite this Source
Route and Main line. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/main_line/route
Main line & Route. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/main_line/route>.
Route or Main line. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/main_line/route.
Google Ngram Viewer shows how "main line" and "route" have occurred on timeline