case·​ment | \ˈkās-mənt \

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 \

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

On summery days, customers can head to sidewalk seating and a patio out the back of the bar, tucked under a protective overhang, or catch a breeze from the open casement windows along Jefferson Street. Carol Deptolla, Milwaukee Journal Sentinel, "International flavors, down at the corner bar, are an American experience," 3 July 2018 Off the great room is the sunroom with access to the pool area and expansive views through three walls of casement windows. Carol Riordan,, "Property of the Week: 59 Papermill Road, Glastonbury," 28 Dec. 2017 David Maddox, director of facilities and property management for the church, said the columns and window casements inside Trinity are stone, but the interior walls are plaster painted to look like stone when the church was built in the 1840s. Washington Post, "NYC’s historic Trinity Church to partially close for 2 years," 6 May 2018 The building survived intact until 1935, when a new front was built with plain red brick and wide casement windows. Josh Barbanel, WSJ, "A TV Marketer Puts Unique Twist on Manhattan Townhouse Sales Pitch," 21 Mar. 2018 Inside, a dramatic double-height living room takes center stage, where a two-story wall of steel casement windows frame views of 30-foot trees and gorgeous gardens. Lauren Ro, Curbed, "Designer’s dazzling ‘clock house’ wants $3.6M outside NYC," 20 Mar. 2018 Roy’s Fish and Chips, in a square converted from military casements, is a good, ahem, perch for watching the bustle of Gibraltar, which can sometimes be overrun by cruise ship day-trippers. James R. Carroll,, "Gibraltar draws visitors with curious monkeys and Britain-meets-the-Mediterranean vibe," 14 Mar. 2018 Here, a wall with 11-foot-tall industrial casement windows opening onto dramatic cityscapes contrasts with other walls covered in contemporary art. Gregory Cerio, ELLE Decor, "HOUSE TOUR: A New York City Apartment That Embraces Bohemian Style," 3 Aug. 2016 Most units are meant to fit in double-hung windows, but there are models designed for casement windows as well. Brian Resnick, Popular Mechanics, "How to Install a Window Air-Conditioner Unit," 13 Aug. 2010

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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Statistics for casement

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Time Traveler for casement

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

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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 \

Kids Definition of casement

1 : a window sash opening on hinges

2 : a window with a casement

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Comments on casement

What made you want to look up casement? Please tell us where you read or heard it (including the quote, if possible).


by force of circumstances

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