A derogatory term referring to Northern Italians. The opposing term is terrone referring to Southern Italians. It is disputed whether or whether not Northern Italy includes the central region of Italy (between Bologna and Rome. The word literally translates to 'Big Polenta' with polenta being a traditional dish of Northern Italy.
(pl. polentoni, polentones)
If I wanted to be racist, I would refer to Paolo as a 'polentone as he was born in Bergamo, a city in Northern Italy.