Webster's Revised Unabridged Dictionary · 1913

Campagna

Campagna (cȧm*pa"nyȧ) , noun

[Italian See Campaign.]

An open level tract of country; especially “Campagna di Roma.” The extensive undulating plain which surrounds Rome.

Its length is commonly stated to be about ninety miles, and its breadth from twenty-seven to forty miles. The ground is almost entirely volcanic, and vapors which arise from the district produce malaria.