‖n. [ F. , fr. campagne field. ] (Zool.) A mouse (Arvicala agrestis), called also meadow mouse, which often does great damage in fields and gardens, by feeding on roots and seeds. [ 1913 Webster ]

n. [ It. See Campaign. ] An open level tract of country; especially “Campagna di Roma.” The extensive undulating plain which surrounds Rome. [ 1913 Webster ]

☞ 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. [ 1913 Webster ]