: a window sash that opens on hinges at the side
also : a window with such a sash

Examples of casement 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.
There are a wealth of services out there that make beautiful window treatments, but far less of them that feel truly foolproof (try measuring a casement by yourself) and fall in a budget-friendly price range. Lila Allen, Architectural Digest, 17 Dec. 2024 Sunlight pouring in through the large casement window, which is open. Ayad Akhtar, The Atlantic, 4 Dec. 2024 There were also repairs made to the glass awning and steel casement windows. Abby Montanez, Robb Report, 25 Nov. 2024 Photo: Brown Harris Stevens Looking over the library, a guest bedroom takes up the rest of the top floor and is lit with two skylights and a casement window over the garden. Adriane Quinlan, Curbed, 24 Oct. 2024 See all Example Sentences for casement 

Word History

Etymology

Middle English, hollow molding

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of casement was in the 15th century

Dictionary Entries Near casement

Cite this Entry

“Casement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/casement. Accessed 30 Dec. 2024.

Kids Definition

1
: a window frame opening on hinges like a door
2
: a window with a casement

Biographical Definition

Casement

biographical name

Sir Roger David 1864–1916 Irish rebel

More from Merriam-Webster on casement

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