: a usually red warning light mounted at the rear of a vehicle
called also taillamp
Examples of taillight in a Sentence
Recent Examples on the Web
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, 7 Mar. 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.
—Kansas City Star Weather Bot, Kansas City Star, 5 Mar. 2026
Or the large rear air vent that houses the halo taillight.
—New Atlas, 5 Mar. 2026
These four-seaters — mimicking a Dodge Charger, Mazda RX-Y, Nissan Skyline GT-R and Toyota Supra, all complete with pull-down lap-bars and working taillights — were unveiled at a media event Wednesday.
—Todd Martens, Los Angeles Times, 4 Mar. 2026
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Nc Weather Bot, Charlotte Observer, 7 Mar. 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.
—Kansas City Star Weather Bot, Kansas City Star, 5 Mar. 2026
Or the large rear air vent that houses the halo taillight.
—New Atlas, 5 Mar. 2026
These four-seaters — mimicking a Dodge Charger, Mazda RX-Y, Nissan Skyline GT-R and Toyota Supra, all complete with pull-down lap-bars and working taillights — were unveiled at a media event Wednesday.
—Todd Martens, Los Angeles Times, 4 Mar. 2026
See All Example Sentences for taillight
Cite this Entry
“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 9 Mar. 2026.
Copy CitationKids Definition
taillight
noun
tail·light
ˈtā(ə)l-ˌlīt 
: a red warning light mounted at the rear of a vehicle
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