Definition of window :
1. A figure formed of lines crossing each other.
2. An opening in the wall of a building for the admission of light and air, usually closed by casements or sashes containing some transparent material, as glass, and capable of being opened and shut at pleasure.
3. The shutter, casement, sash with its fittings, or other framework, which closes a window opening.
4. To furnish with windows.
5. To place at or in a window.
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