window (noun)
1: a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air
2: a transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened
3: a transparent panel (as of an envelope) inserted in an otherwise opaque material
4: an opening that resembles a window in appearance or function; "he could see them through a window in the trees"
5: the time period that is considered best for starting or finishing something; "the expanded window will give us time to catch the thieves"; "they had a window of less than an hour when an attack would have succeeded"
6: a pane in a window; "the ball shattered the window" [syn: windowpane]
7: an opening in the wall of a building (usually to admit light and air); "he stuck his head in the window"
8: (computer science) a rectangular part of a computer screen that contains a display different from the rest of the screen