1, 3. Curtain, blind, shade, shutter agree in being covers for a window, to shut out light or keep persons from looking in. Curtain, blind, and shade may mean a cover, usually of cloth, which can be rolled up and down inside the window. Curtain, however, may also refer to a drapery at a window; and a Venetian blind consists of slats mounted on tapes for drawing up or down and varying the pitch of the slats. Blind and shutter may mean a cover made of two wooden frames with movable slats, attached by hinges outside a window and pulled together or opened at will. Shutters may mean also a set of panels (wooden or iron) put up outside small shops or stores at closing time

Did you mean lift the curtain?