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colour light
From Wiktionary, the free dictionary
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English
Noun
colour light (plural colour lights)
- (rail transport, British spelling) Short for colour light signal.
- 1957 June, S. C. Crowther-Smith, “Lower Quadrant”, in Railway Magazine, pages 422, 423:
- Progress cannot be denied and must not be deprecated. Colour-lights are obviously the signals of the future. […] The traditional British signal is on its way out. Unsentimental officials will doubtless decree colour-lights from Kings Cross to Waverley, and from Paddington to Penzance, with upper quadrants on minor branches.
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