: 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.
—
Ca Weather Bot, Sacbee.com, 28 Mar. 2026
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Southern California Weather Report, Daily News, 27 Mar. 2026
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
See All Example Sentences for taillight
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Ca Weather Bot, Sacbee.com, 28 Mar. 2026
Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights.
—Southern California Weather Report, Daily News, 27 Mar. 2026
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
See All Example Sentences for taillight
Cite this Entry
“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 31 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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