noun
the whole line; the entire route
Used for a single railway line, bus route, or similar transport line in its entirety.
台風のため、JR全線で運転を見合わせています。
Due to the typhoon, operations are suspended on all JR lines.
noun
all lines; all routes
Refers to every line or route in a network, not just one.
このパスは地下鉄全線で使えます。
This pass can be used on all subway lines.
noun
the whole front; all fronts
Military or figurative use for an entire battlefront or all areas of conflict. Also used metaphorically for a broad effort.
敵は全線で攻勢を強めた。
The enemy intensified their offensive on all fronts.