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