Crossword clue: the upper story of the nave of a church, containing windows, and rising above the aisle roofs.

The most common answer is clearstory (10 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

clearstory 10 letters web-def

part of an interior wall rising above the adjacent roof with windows admitting light

clerestory 10 letters web-def

part of an interior wall rising above the adjacent roof with windows admitting light