In architecture, a clerestory is a high section of wall that contains windows above eye level. The purpose is to admit light, fresh air, or both.

What do you mean by clerestory window?

clerestory, in architecture, any fenestrated (windowed) wall of a room that is carried higher than the surrounding roofs to light the interior space. In a large building, where interior walls are far from the structure's exterior walls, this method of lighting otherwise enclosed, windowless spaces became a necessity.

What do clerestory windows look like?

A clerestory is any windowed wall that is higher than the roofs around it. They appear as a row of windows high above eye level that let the light shine down inside to give your room a heavenly appearance. They are common in modern homes as the pitches of the roof are more forgiving.