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, 17 Aug. 2025 The agents stopped dozens of cars at the intersection of 14th and W streets NW, and pulled over drivers for seat belt violations or broken taillights, the Post reported. Khaleda Rahman, MSNBC Newsweek, 14 Aug. 2025 Over 800 tiny light louvers spread across the grille and headlight bar at the front and the taillights at the rear, where a microscopic spoiler matches a chrome lower diffuser. Michael Teo Van Runkle, ArsTechnica, 13 Aug. 2025 Out back, a new mesh wraparound treatment, just below the taillights, gives the Urus SE a more sinister look. Karl Brauer, Forbes.com, 7 Aug. 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

Browse Nearby Words

Cite this Entry

“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 1 Sep. 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

More from Merriam-Webster on taillight

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!