01 n. A light, with a powerful reflector, placed at the front of a vehicle such as an automobile, truck, locomotive etc., to throw light on the r…
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A light, with a powerful reflector, placed at the front of a vehicle such as an automobile, truck, locomotive etc., to throw light on the road or track ahead of the vehicle at night, or in going through a dark tunnel; a headlamp.(Engin.) Also: headlamp