Definition of war hawk in English English dictionary
Member of the U.S. Congress who advocated war with Britain (1811). The term was applied by opponents to newly elected Southern and Western congressmen who strongly promoted U.S. expansion into the Northwest and Canada and vigorously protested British aid to Indians. The anti-British fervour of the War Hawks, who included Henry Clay and John C. Calhoun, helped cause the War of 1812
person who advocates and clamors for war (in particular an American jingo that favored war with Great Britain around 1812); person who favors aggressive or warlike political policy (Slang)