backup light

noun

: a light mounted at the rear of a motor vehicle and so connected that it shines only when the vehicle is in reverse gear illuminating the road behind

Word History

First Known Use

1924, in the meaning defined above

Time Traveler
The first known use of backup light was in 1924

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Dictionary Entries Near backup light

Cite this Entry

“Backup light.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backup%20light. Accessed 23 Jun. 2024.

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