[n] a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air
[n] a transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened
[n] a transparent panel (as of an envelope) inserted in an otherwise opaque material
[n] (computer science) a rectangular part of a computer screen that contains a display different from the rest of the screen
[n] an opening in the wall of a building (usually to admit light and air); "he stuck his head in the window"
[n] a pane in a window; "the ball shattered the window"
[n] an opening that resembles a window in appearance or function; "he could see them through a window in the trees"