Cantilevered or suspended roofs over the entrances to buildings, of metal or metal and glass; in the 19th and 20th centuries, common over the entrances to theaters, casinos, and hotels to advertise entertainment. For smaller, often ornamental, rooflike structures at entrances, use "canopies (structural elements).
Source: AAT
http://vocab.getty.edu/page/aat/300003170
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