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

Examples of deadlight 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.
In Stephen King’s novel, the title creature reveals itself as a giant spider, its truest form that isn’t the crazy-making deadlights. Louis Peitzman, Vulture, 15 Dec. 2025

Word History

First Known Use

1726, in the meaning defined above

Time Traveler
The first known use of deadlight was in 1726

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Cite this Entry

“Deadlight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deadlight. Accessed 20 Dec. 2025.

Last Updated: - Updated example sentences
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