windowless's Usage Examples:

The walls were solid concrete and windowless.

Additionally, some workplaces use full spectrum bulbs in light fixtures, especially in a factory or windowless office.

The surface building consists of a rectangular windowless concrete blockhouse with one corner cut out and a slightly hipped roof.

Modern writers describe the place as windowless, but Ibn Jubair mentions five windows of rich stained glass from Irak.

Indeed, these underage workers toil away in the windowless rooms of buildings that would otherwise be condemned in the United States.

He couldn't tell the time in the windowless room, but he gauged it to be after midnight.

Grasso no longer hid the knife he carried in his right hand as they moved nearly out of range to a dark, windowless van.

Filming at the Bernard Matthews plant took place inside one of its huge, windowless sheds at Weston Longville.

This is another windowless rectangular blockhouse with a blast protected entrance.

Hippeastrum >>The surface building consists of a rectangular windowless concrete blockhouse with one corner cut out and a slightly hipped roof.