WINDOW

A framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air

A transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened

A transparent panel (as of an envelope) inserted in an otherwise opaque material

An opening that resembles a window in appearance or function

Example: "He could see them through a window in the trees"

The time period that is considered best for starting or finishing something

Example: "The expanded window will give us time to catch the thieves"

A pane of glass in a window

Example: "The ball shattered the window"

An opening in a wall or screen that admits light and air and through which customers can be served

Example: "He stuck his head in the window"

(computer science) a rectangular part of a computer screen that contains a display different from the rest of the screen