A pizza is a flat, round piece of dough covered with tomatoes, cheese, and other savoury food, and then baked in an oven.
...the last piece of pizza.
We went for a pizza together at lunch-time.
pizza in British English
(ˈpiːtsə)
noun
a dish of Italian origin consisting of a baked disc of dough covered with cheese and tomatoes, usually with the addition of mushrooms, anchovies, sausage, or ham
Word origin
C20: from Italian, perhaps from Vulgar Latin picea (unattested), from Latin piceus relating to pitch2; perhaps related to Modern Greek pitta cake
pizza in American English
(ˈpitsə)
US
noun
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.
Word origin
It, prob. substitution of pizza, point, edge, for ModGr pitta, cake