Guilty. Years ago, my mind had decided that clerestory windows were actually ‘celestory’ windows. They were called that because, I was certain, they were high up on the wall to let in ‘celestial’ light. Thus, they were ‘celestory’ windows. Argued that point with friend, who showed me a dictionary. One my more humbling moments...
Dig in hard! The bloke that wrote the dictionary was no expert on windows.