Other forms: headlights
A headlight is one of the two bright front lights of a car at night. Dipped for oncoming traffic, on full beam for empty roads.
The word is nearly always plural. British English also says headlamp. Modern ones are LED and startlingly bright, which has become a genuine complaint. The phrase caught in the headlights describes an animal, or a person, frozen and unable to react, and it is one of the most vivid images in everyday English. Flashing your headlights is a whole informal language of its own on British roads.
1nounheadlightA powerful light at the front of a vehicle.
“A car came round the bend with its headlights on full.”
Also accepted in games: headlights
From head + light.
Etymology from Wiktionary, CC BY-SA