also clearstory noun Etymology: Middle English, from clere clear + story Date: 15th century an outside wall of a room or building that rises above an adjoining roof and contains windows, gallery
CLERESTORY
Meaning of CLERESTORY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012