1
: a light with a reflector and special lens mounted on the front of a vehicle to illuminate the road ahead
also
: the beam cast by a headlight
2
: a light worn on the forehead (as of a miner or physician)
Examples of headlight in a Sentence
Recent Examples on the Web
Using low-beam headlights, which also activate your taillights.
—
Ca Weather Bot, Sacbee.com, 12 Jan. 2026
As long as the safety ratings and crash numbers continue to dip, expect bright headlights to stay.
—Doug Turnbull, AJC.com, 11 Jan. 2026
Make your vehicle visible to others both ahead of you and behind you by using your low-beam headlights since this means your taillights will also be on.
—Nc Weather Bot, Charlotte Observer, 10 Jan. 2026
Currently the headlights are foggy, other than that the car is in good shape.
—John Paul Senior Manager Public Affairs and Traffic Safety Aaa Northeast, Hartford Courant, 10 Jan. 2026
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Cite this Entry
“Headlight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headlight. Accessed 13 Jan. 2026.
Kids Definition
headlight
noun
head·light
ˈhed-ˌlīt 
: a light on the front of a vehicle
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