case·​ment | \ ˈkās-mənt How to pronounce casement (audio) \

Definition of casement

 (Entry 1 of 2)

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


biographical name
Case·​ment | \ ˈkās-mənt How to pronounce Casement (audio) \

Definition of Casement (Entry 2 of 2)

Sir Roger David 1864–1916 Irish rebel

Examples of casement in a Sentence

Recent Examples on the Web: Noun The dining room on the right and the living room on the left both have large casement windows or French doors. Judy Rose, Detroit Free Press, 24 Apr. 2021 But no matter their location, casement windows offer many advantages like energy efficiency and top-notch security thanks to airtight seals, safety locks, and easy-to-operate hand cranks. Bridget Degnan, Better Homes & Gardens, 9 Apr. 2021 Directors Michael Dweck and Gregory Kershaw often capture them at home in postures that consciously evoke Old Masters like Rembrandt and Vermeer, with light streaming in from casement windows on the left., 7 Apr. 2021 Window air conditioners aren't designed for use with casement windows. Lauren Corona,, 26 Mar. 2021 The space’s focal point is a ’90s LC4 chaise by Charlotte Perriand, Le Corbusier and Pierre Jeanneret, positioned in front of that 10-foot-high casement window, which is flanked by curtain panels of ivory raw silk. New York Times, 18 Feb. 2021 Other interior details include custom millwork, casement windows, brick façade, and a circular drive. Emilia Benton, Houston Chronicle, 22 Aug. 2020 Beyond the kitchen is a dining area brightened by large casement windows and a pair of oval windows. Julie Lasky, New York Times, 8 Apr. 2020 The bedroom is off the living room and has wood floors, casement and mullioned windows, and a closet with a stacked washer and dryer. Julie Lasky, New York Times, 25 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'casement.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of casement


15th century, in the meaning defined above

History and Etymology for casement


Middle English, hollow molding

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Time Traveler for casement

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

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Statistics for casement

Last Updated

8 May 2021

Cite this Entry

“Casement.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2021.

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More Definitions for casement



English Language Learners Definition of casement

: a window that opens on hinges like a door


case·​ment | \ ˈkā-smənt How to pronounce casement (audio) \

Kids Definition of casement

1 : a window sash opening on hinges
2 : a window with a casement

More from Merriam-Webster on casement

Nglish: Translation of casement for Spanish Speakers


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