Windows

A window is a transparent or translucent opening in a wall, door or vehicle that allows the passage of light and, if not closed or sealed, air and sound. Windows are usually glazed or covered in some other transparent or translucent material. Windows are held in place by frames. Many glazed windows may be opened, to allow ventilation, or closed, to exclude inclement weather.
The word window originates from the Old Norse 'vindauga', from 'vindr – wind' and 'auga–eye', i.e., wind eye.

[Wikipedia]