Fitted with windows, often of a particular kind or, in (heraldry), of a specified colour.
1712, The Spectator, No. 276, Wednesday, January 16, 1712, Dublin: W. Wilson, 1778, Volume IV, p. 103,
You must have seen a strange windowed house near Hyde-Park, which is so built that no one can look out of any of the apartments […]
a bow-windowed room
(computing, graphical user interface) Occupying only a part of the screen (in a window.)
This game can be played both in windowed mode and in full-screen mode.