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Definition of headlight

headlight

/ˈhɛd.laɪt/
head · light
Plural:headlights
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headlight Lexical Profile

headlight Game Scores & Validity

• noun

1

A powerful lamp mounted on the front of a motor vehicle, locomotive, or bicycle to illuminate the path ahead.

Example

"She forgot to turn off her car's headlights, and the battery was completely dead by morning."

2

The beam of illumination projected by the front lamp of a vehicle.

Example

"The deer stood completely frozen, staring blindly into the approaching headlights."

Synonyms
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Antonyms
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• Rhymes for headlight

• Nearby Words

headlamp
headland
headless
headlight
headlike
headline
headliner

Word Origin & Etymology

A compound of 'head' (indicating the front) and 'light', originating in the late 19th century initially to describe the lamps mounted on the front of railway locomotives before being applied to automobiles.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Headlight. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/headlight
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