single line; single track
Meanings
2 senses · 6 examplesnoun
a single line
Refers to a single, unconnected line, such as in drawing, communication, or simple connections.
He outlined the shape with a single line.
This telephone line is single, so it cannot receive calls simultaneously.
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Early telegraph systems used single-line transmission.
noun
single track (railway or tramway)
technicalSpecifically used in transportation to describe a single set of rails, as opposed to double-track railways where trains can pass simultaneously in opposite directions.
This mountain railway is still single-track, so trains need to wait to pass each other.
To increase transport capacity, the government plans to convert the single-track railway into double-track.
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Because it's a single-track tram line, passengers often have to wait for the oncoming tram to pass.