Pronunciation: /ˈklɪəˌstɔːri/
(US also clearstory)
noun (plural clerestories)
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the upper part of the nave, choir, and transepts of a large church, containing a series of windows.
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a series of windows in another large building that are similar to those in a clerestory.
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a raised section of roof running down the centre of a railway carriage, with small windows or ventilators.
