Definition of curtain

• n. - A hanging screen intended to darken or conceal, and admitting of being drawn back or up, and reclosed at pleasure; esp., drapery of cloth or lace hanging round a bed or at a window; in theaters, and like places, a movable screen for concealing the stage.
• n. - That part of the rampart and parapet which is between two bastions or two gates. See Illustrations of Ravelin and Bastion.
• n. - That part of a wall of a building which is between two pavilions, towers, etc.
• n. - A flag; an ensign; -- in contempt.
• v. t. - To inclose as with curtains; to furnish with curtains.