: 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.
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Nc Weather Bot, Charlotte Observer, 22 July 2025
Visibility priority: Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Kansas City Star, 7 July 2025
There are LEDs gracing the new front fascia lighting, as well as the 3D holographic taillights.
—New Atlas, 18 June 2025
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Nc Weather Bot, Charlotte Observer, 3 July 2025
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Nc Weather Bot, Charlotte Observer, 22 July 2025
Visibility priority: Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Kansas City Star, 7 July 2025
There are LEDs gracing the new front fascia lighting, as well as the 3D holographic taillights.
—New Atlas, 18 June 2025
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Nc Weather Bot, Charlotte Observer, 3 July 2025
See All Example Sentences for taillight
Cite this Entry
“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 4 Aug. 2025.
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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