colour light

English

Noun

colour light (plural colour lights)

  1. (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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