a baked Italian dish consisting of flattened bread dough covered variously with herbs, fresh vegetables, or, typically in the U.S., with tomato sauce, grated cheese, and, often, sausage, mushrooms, pepperoni, etc.
See pizza in American Heritage Dictionary 4
(pētˈsə)
noun
A baked pie of Italian origin consisting of a shallow breadlike crust covered with toppings such as seasoned tomato sauce, cheese, sausage, or olives.