Nouns

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