What is a clerestory? will make the !

the upper part of the nave, choir, and transepts of a large church, containing a series of windows. It is clear of the roofs of the aisles and admits light to the central parts of the building.

   the windows in the clerestory of a church or similar windows in another building.

   a raised section of roof running down the center of a railroad car, with small windows or ventilators

Explanation:

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