Can you explain me what is the meaning of plaza?

Plaza (IPA/'pla?a/ or/'plasa/) is a Spanish word related to "field" which describes an open urban public space, such as a city square. All through Spanish America, the plaza mayor of each center of administration held three closely related institutions: the cathedral, the cabildo or administrative center, which might be incorporated in a wing of a governor's palace, and the audiencia or law court. The plaza might be large enough to serve as a military parade ground. At times of crisis or fiesta, it was the space where a large crowd might gather. Like the Italian piazza, the plaza remains a center of community life that is only equalled by the market-place. Most colonial cities in Spanish America were planned around a square plaza de armas, where troops could be mustered, as the name implies, surrounded by the governor's palace and the main church. A plaza de toros is a bullring. The Italian cognate is Piazza, the French cognate Place. Source: http://www.answers.com/plaza?initiator=IE7:SearchBox