: 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
Across the back, a band of LED taillights caps it all off, tucked into a shallow valley just like the one that carries the BMW logo at the front.
—
Marty Padgett, The Drive, 18 Mar. 2026
According to police documents, Brown was pulled over for non-working taillights.
—Jt Moodee Lockman, CBS News, 16 Mar. 2026
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Nc Weather Bot, Charlotte Observer, 10 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
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Marty Padgett, The Drive, 18 Mar. 2026
According to police documents, Brown was pulled over for non-working taillights.
—Jt Moodee Lockman, CBS News, 16 Mar. 2026
Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights.
—Nc Weather Bot, Charlotte Observer, 10 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
See All Example Sentences for taillight
Cite this Entry
“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 24 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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