6867flats (apartments)TTen-USVocabulário Colaborativo em Artes e Arquitetura active approved flats (apartments)One-floor apartments, usually modest, each having an outside entrance; may also be used for buildings having a small number of such units and usually dating from the late 19th or early 20th century. Generally American usage.

Source: AAT

http://vocab.getty.edu/page/aat/300004064

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