Casement
/ˈkeɪs.mənt/noun
A window sash that opens on hinges, or a window fitted with such a sash.
Did you know?The word ultimately comes from Latin *capsa* meaning “box” or “case,” the same root behind *case* and *capsule*, so a casement is literally a “boxed-in” opening in the wall.
Etymological Timeline
Latin
Latin
capsa
“a box, chest, or container”
Late Latin
Latin
casiamentum
“a frame or opening fitted with a box-like cover or closure”
Old French
Old French
casement
“a window frame or shutter”
14th Century
English
casement
“a hinged window or window frame”
Modern English
English
casement
“a window sash hinged on one side”