Definition of headlight noun from the Oxford Advanced Learner's Dictionary

 

headlight

 noun
noun
BrE BrE//ˈhedlaɪt//
 
; NAmE NAmE//ˈhedlaɪt//
 
(also headlamp especially in British English) Parts of a car
 
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a large light, usually one of two, at the front of a vehicle; the beam from this light He dipped his headlights (= directed the light downwards) for the oncoming traffic. See related entries: Parts of a car
See the Oxford Advanced American Dictionary entry: headlight