A piazza is a large open square in a town or city, especially in Italy. They were seated at a table outside a pub in a pleasant piazza close by St Paul's. a large square open area between the houses in a town or city, where people often meet or sit together (platea ). Open square or marketplace, surrounded by buildings, in an Italian town or city. It was equivalent to the plaza of Spanish-speaking countries. The term became more widely used in the 16th-18th century, denoting any large open space with buildings around it. In 17th-18th-century Britain, long covered walks or galleries with roofs supported by columns were called piazzas; in the U.S. in the 19th century, piazza was another name for a veranda formed by projecting eaves
a public square with room for pedestrians; "they met at Elm Plaza"; "Grosvenor Place"