English Explanatory Dictionary

colour light signal

English dictionary entry

Meanings

noun
  1. An electric railway signal with colour aspects, showing either red or green in a 2-aspect signal, with the addition of a yellow or double yellow aspect (meaning caution) in 3- and 4-aspect signals.

Word forms

colour light signal colour light signals colour-light signal color light signal color-light signal

Synonyms

colour light
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