taillight

noun

tail·​light ˈtāl-ˌlīt How to pronounce taillight (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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 But her defense team alleged police planted taillight shards to frame Read, and showed jurors videos taken after O’Keefe’s body was found where Read's taillight appeared more in-tact. Karissa Waddick, USA Today, 25 June 2025 The prosecution claimed that Read’s taillight, which was photographed after the SUV was taken into police custody, was smashed out when Read allegedly hit O’Keefe. Ct Jones, Rolling Stone, 18 June 2025 Porsche took the 963 RSP out for a spin on roads outside of Le Mans, and that involved changing the specs from the competition cars as well, including lifting the car a little bit and changing the electronics that control the headlights and taillights. Erik Shilling, Robb Report, 6 June 2025 See All Example Sentences for taillight

Word History

First Known Use

1844, in the meaning defined above

Time Traveler
The first known use of taillight was in 1844

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Cite this Entry

“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 24 Jul. 2025.

Kids Definition

taillight

noun
tail·​light ˈtā(ə)l-ˌlīt How to pronounce taillight (audio)
: a red warning light mounted at the rear of a vehicle

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