low-lying plain in central Italy, around Rome: c. 800 sq mi (2,072 sq km)
See Campagna di Roma in American Heritage Dictionary 4
(kăm-pänˈyə dē rōˈmə, -mä, käm-)
A low-lying region surrounding Rome, Italy. It was a favorite residential area during ancient times but was largely abandoned for centuries because of the prevalence of malaria. Much of the region was reclaimed and repopulated in the 19th and 20th centuries.