noun
Tōkaidō Line
Refers to the JR Tōkaidō Line, a major railway line connecting Tokyo and Kobe. Often used in travel contexts.
東海道線で京都まで行きます。
I will go to Kyoto on the Tōkaidō Line.
東海道線は東京駅から出ています。
The Tōkaidō Line departs from Tokyo Station.
Named after the historical Tōkaidō road; the line follows roughly the same route.