Definition of red light noun from the Oxford Advanced Learner's Dictionary


red light

BrE BrE//ˌred ˈlaɪt//
; NAmE NAmE//ˌred ˈlaɪt//
Controlling traffic
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a signal telling the driver of a vehicle to stop to go through a red light (= not stop at one) See related entries: Controlling traffic
See the Oxford Advanced American Dictionary entry: red light