/ahr den"/ ; Fr. /annrdd den"/ , n.
1. Forest of , a wooded plateau region in W Europe, in NE France, SE Belgium, and Luxembourg: World War I battle 1914; World War II battle 1944-45.
2. a department in NE France. 309,306; 2028 sq. mi. (5255 sq. km). Cap.: Mézières.