headlight
UK: ˈhɛdlaɪt | US: ˈhɛdlaɪt
n. a powerful light mounted on the front of a vehicle to illuminate the road ahead
The word "headlight" is a compound of "head" (referring to the front position) and "light" (illumination). It emerged in the 19th century with the advent of automobiles, combining the concept of directional placement ("head") and the function of illumination ("light"). The term logically reflects its purpose: a light fixed at the front ("head") of a vehicle to light the way.
The car's headlight flickered and then went out completely.
He adjusted the angle of the headlight to improve visibility.
Cyclists should use a headlight when riding at night.
The deer froze in the beam of the truck's headlight.
Modern headlights often use LED technology for better efficiency.