: 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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Ca Weather Bot, Sacbee.com, 6 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Nc Weather Bot, Charlotte Observer, 4 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Kansas City Star Weather Bot, Kansas City Star, 2 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Southern California Weather Report, Oc Register, 29 Oct. 2025
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Ca Weather Bot, Sacbee.com, 6 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Nc Weather Bot, Charlotte Observer, 4 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Kansas City Star Weather Bot, Kansas City Star, 2 Nov. 2025
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Southern California Weather Report, Oc Register, 29 Oct. 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 8 Nov. 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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