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deadlight

noun

dead·​light ˈded-ˌlīt How to pronounce deadlight (audio)
: a metal cover or shutter fitted to a port to keep out light and water

Word History

First Known Use

1726, in the meaning defined above

Time Traveler
The first known use of deadlight was in 1726

Rhymes for deadlight

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Browse Nearby Words

dead lift
deadlight
deadline
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Cite this Entry

“Deadlight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deadlight. Accessed 30 Nov. 2025.

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