All-red line—(UK hist., also: all-red route) a telegraph line lying throughout in British territory.
- Green tells of Fleming’s advocacy of a Pacific Cable and the All-Red Line.
Thin red line—(UK)
1. (dated) the British army (used with the implication of its supposed invincibility).
- Napoleon Bonaparte soon found that in the “thin red line” he had more than met his match.
2. the heroic resistance of few against many.
- England’s thin red line of intellectual royalists is being overrun by “progressive” reformers who sabotage old-fashioned academic virtues.
Thin line—a significantly blurred borderline between two things.
- There is often only a thin line between a successful launch and devastating destruction. Rockets are an unforgiving
technology.
See also: ragged blue line / thin blue line.