casement
noun
a window sash opening on hinges that are generally attached to the upright side of its frame.
casement
1 American
[keys-muhnt]
/ ˈkeɪs mənt /
noun
-
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.
Casement
2
American
[keys-muhnt]
/ ˈkeɪs mənt /
noun
casement
1
British
/ ˈkeɪsmənt /
noun
-
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
Casement
2
British
/ ˈkeɪsmənt /
noun
Other Word Forms
Etymology
Origin of casement
Explanation
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."
Vocabulary lists containing casement
"The Highwayman"
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The Merchant of Venice
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As You Like It
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
It also comes complete with two staircases, window seats, and casement windows.
From MarketWatch ● Jun. 26, 2026
The casement windows on the second floor were probably added in the 1920s — casement windows became popular then — and those very large ground-floor picture windows came later.
From New York Times ● Nov. 21, 2022
"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
“We added casement windows with screens so that it could be a four-season porch and we could enjoy it all year long,” said Baudoin.
From Seattle Times ● Jul. 6, 2021
There were stone turrets, an assortment of chimneys, and casement windows.
From "Chasing Vermeer" by Blue Balliett
The GAA looks set to scale back its plans to redevelop Casement Park, BBC News NI understands.
From BBC ● Jul. 3, 2026
Antoin Duffy, with an address at Braade, Kincasslagh, County Donegal, was extradited from Scotland and arrested at Casement Aerodrome in Baldonnell in Dublin.
From BBC ● Mar. 30, 2026
Money from the fund was also earmarked to go towards stalled projects like the A5 road and Casement Park stadium.
From BBC ● Feb. 1, 2026
Depression is one of the leading causes of disability among people ages 16 to 24, Casement said.
From Science Daily ● Jan. 7, 2026
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 Dame Rose Macaulay
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.
