Liberal Dictionary English Dictionary
noun
- a light or lamp, usually equipped with a reflector, on the front of an automobile, locomotive, etc.
noun
- a powerful light, equipped with a reflector and attached to the front of a motor vehicle, locomotive, etcSee also quartz-iodine lamp
1861, originally of ships and locomotives, from head (n.) + light (n.). Related: Headlights, which, as slang for “a woman’s breasts,” is from 1940s.