1. • 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
   • 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
   • noun - the time period that is considered best for starting or finishing something
   • noun - a pane of glass in a window
   • noun - an opening in a wall or screen that admits light and air and through which customers can be served
   • noun - (computer science) a rectangular part of a computer screen that contains a display different from the rest of the screen
2. • An opening constructed in a wall or roof that functions to admit light or air to an enclosure and is often framed and spanned with glass mounted to permit opening and closing.
   • A framework enclosing a pane of glass for such an opening; a sash.
   • A pane of glass or similar material enclosed in such a framework.
   • An opening that resembles a window in function or appearance.
   • The transparent panel on a window envelope.
   • The area or space immediately behind a window, especially at the front of a shop.
   • A means of access or observation: St.
   • An interval of time during which an activity can or must take place: a brief window of opportunity for a space mission; a window of vulnerability during which the air force was subject to attack.
   • Strips of foil dropped from an aircraft to confuse enemy radar; chaff.
   • A range of electromagnetic frequencies that pass unobstructed through a planetary atmosphere.
   • A small area on a screen in which a file or a part of a file can be displayed.
   • Aerospace.
   • A launch window.
   • Rockets and missiles now travel through the “wind’s eye.
3. • v - to provide with a window (an opening in a wall to admit light and air)

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