Wiktionary
a. Without windows.
Usage examples of "unwindowed".
The room was large and unwindowed, and dust was thick on the floor and the objects stored there.
Above the featureless walls jutted ornamented facades of great houses or blank sides of long unwindowed buildings.
The combined palace-administrative-military buildings presented a flat, blank, unwindowed stone face to the rest of the city, but within were many small gardens, interior courtyards and an extensive parade ground.
Originally built of brown stone, the years had deepened the tint almost to blackness in the larger stretches of outer wall and unwindowed gable.
The unwindowed sides held medallions of similar size and shape, carved with what appeared to be medieval knights and ladies.
Plex, spilling apologies like a leaky bucket, walked me down through the warehouse district to the wharf and into an unwindowed place called Tokyo Crow.