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Definition of casement
casement
/ˈkeɪs.mənt/
case · ment
Plural:casements
casement Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Rare
Syllables
2
casement Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A window or part of a window set on hinges so that it opens and closes like a door.
Example
"She unlatched the iron casement to let the cool evening breeze into the study."
2
An outer covering, casing, or protective frame around an object.
Example
"The antique clock was preserved inside a sturdy wooden casement."
Synonyms
View all synonyms for casement• Rhymes for casement
Word Origin & Etymology
Originating in the late Middle English period as an aphetic shortening of 'encasement', derived from Anglo-French 'encassement' (a frame or enclosure) and ultimately from Latin 'capsa' (box or case).
Cite this Entry
Wordmom. (2026). Definition of Casement. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/casement