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.
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, 8 May 2025 Pieces of broken taillight found where prosecutors say the woman hit her cop boyfriend with her SUV and left him in the snow. N'dea Yancey-Bragg, USA Today, 7 May 2025 Ryan Nagel also testified that the taillight of the SUV, the area of the vehicle prosecutors say would strike O’Keefe, was intact at this time. Flint McColgan, Boston Herald, 6 May 2025 Ensure your vehicle is visible to others by using low-beam headlights, which also activate your taillights. Nc Weather Bot, Charlotte Observer, 5 May 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 13 May. 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!