: 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, 18 Dec. 2025
The taillights of the SUV were not on at the time, the complaint said.
—Chris Ramirez, jsonline.com, 15 Dec. 2025
That includes stopping drivers for routine violations like speeding, running a red light or having a broken taillight.
Border Patrol agents, however, don’t have those same state-level powers.
—Tiffani Jackson, Fort Worth Star-Telegram, 11 Dec. 2025
The windshield wraps around the A-pillars, giving an impressive visor view for the driver, while the X-shaped taillights are iterative of the Bolide’s rear.
—Sean Evans, Robb Report, 9 Dec. 2025
See All Example Sentences for taillight
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Ca Weather Bot, Sacbee.com, 18 Dec. 2025
The taillights of the SUV were not on at the time, the complaint said.
—Chris Ramirez, jsonline.com, 15 Dec. 2025
That includes stopping drivers for routine violations like speeding, running a red light or having a broken taillight.
Border Patrol agents, however, don’t have those same state-level powers.
—Tiffani Jackson, Fort Worth Star-Telegram, 11 Dec. 2025
The windshield wraps around the A-pillars, giving an impressive visor view for the driver, while the X-shaped taillights are iterative of the Bolide’s rear.
—Sean Evans, Robb Report, 9 Dec. 2025
See All Example Sentences for taillight
Cite this Entry
“Taillight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/taillight. Accessed 20 Dec. 2025.
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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