(אֶשְׁנָב, eshnab´, Proverbs 7:6; "lattice," Judges 5:28), a kind of barrier of open-work, placed before windows in the East, which, being usually open in summer down to the floor, require some such defense. (See HOUSE).

(1) a frame enclosing part of the glazing of a window, with hinges to open and shut.

(2) An old English name for the deep hollow molding, similar to the scotia of Italian architecture, which is extremely prevalent in Gothic architecture, in cornices) door and window-jambs, etc., especially in the Perpendicular style, and which is frequently enriched with running patterns foliage.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Casement'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/c/casement.html. Harper & Brothers. New York. 1870.

Bible Encyclopedias Casement

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

Bible Encyclopedias
Casement