Meaning of CASEMENT in English

CASEMENT

ˈkāsmənt, older Brit -āzm- noun

( -s )

Etymology: Middle English, probably modification of Old North French encassement frame, from encasser to enchase, frame, from casse case — more at case (box)

1. : a hollow molding similar to a cavetto or scotia

2.

a. : a window sash that opens on hinges fastened to the upright side of the frame

b. or casement window : a window with such a sash or sashes

c. : window

d. : casement cloth

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.