— clerestoried , adj.
/klear"stawr'ee, -stohr'ee/ , n. , pl. clerestories .
1. Archit. a portion of an interior rising above adjacent rooftops and having windows admitting daylight to the interior.
2. a raised construction, as on the roof of a railroad car, having windows or slits for admitting light or air.
Also, clearstory .
[ 1375-1425; late ME, equiv. to clere CLEAR + story STORY 2 ]