a window sash opening on hinges that are generally attached to the upright side of its frame.
Also called casement window. a window with such a sash or sashes.
a casing or covering.
a window frame that is hinged on one side
a window containing frames hinged at the side or at the top or bottom
a poetic word for window
A casement is a type of window that swings open on a hinge, like a door. Open the casements in the kitchen and let the breeze come in! Before the invention of the sash window, which slides up and down, casements were very common. Today, you're more likely to see casement windows in European homes than in the U.S. Extremely old houses, especially those built before the 17th century, commonly have casement windows with leaded glass panes. Experts guess that the word casement comes from the Old French enchassement, "window frame."
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Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It also comes complete with two staircases, window seats, and casement windows.
From MarketWatch ● Jun. 26, 2026
Just imagine a Tudor without its steel casement windows or a Craftsman without its solid built-in bookcases.
From Seattle Times ● Jul. 25, 2023
"When it struck the quarters, the whole room shook and then the joy of somebody coming in, opening the casement, putting the rod in and winding it up," she said.
From BBC ● Feb. 20, 2022
Stained-glass casement windows the color of the Balearic Sea — which Fournier and Marty first used at their new Musée Yves Saint Laurent in Marrakesh — offer views of the neighborhood below.
From New York Times ● Sep. 14, 2018
Now and then, in passing a casement, you glanced out at the thick-falling snow; you listened to the sobbing wind, and again you paced gently on and dreamed.
From "Jane Eyre" by Charlotte Brontë
"It's normal for teens to be night owls, so let them catch up on sleep on weekends if they can't get enough sleep during the week because that's likely to be somewhat protective," Casement said.
From Science Daily ● Jan. 7, 2026
Depression is one of the leading causes of disability among people ages 16 to 24, Casement said.
From Science Daily ● Jan. 7, 2026
The UK and Republic of Ireland's joint bid to host Euro 2028 included Casement Park and Hill Dickinson Stadium, which were both unbuilt at the time of submission.
From BBC ● Nov. 28, 2025
Matches were also set to be played in Northern Ireland, but Belfast's Casement Park was removed as an option because of a lack of funding.
From BBC ● Nov. 12, 2025
He followed Sir Roger Casement through many adventures, and only just escaped sharing in the last of all.
From What Not A Prophetic Comedy by Macaulay, Rose, Dame
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
