[keys-muh
nt] 
| 1. | a window sash opening on hinges that are generally attached to the upright side of its frame. |
| 2. | Also called casement window. a window with such a sash or sashes. |
| 3. | a casing or covering. |
[keys-muhnt] | (Sir) Roger (David), 1864–1916, Irish patriot: hanged by the British for treason. |
| case·ment (kās'mənt) n.
[Middle English, a hollow molding, possibly from Middle English case, chest, frame; see case2.] case'ment·ed adj. |
| Case·ment (kās'mənt) British diplomat who sought German assistance in the Irish nationalist cause during World War I and was executed for treason. |
Casement
a barrier of open-work placed before windows (Prov. 7:6). In Judg. 5:28 the Hebrew word is rendered "lattice," in the LXX. "network," an opening through which cool air is admitted.