[ahr-den; Fr. ar-den] 
| 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). Capital: Mézières. |
| Ar·dennes (är-děn') A plateau region of northern France, southeast Belgium, and northern Luxembourg east and south of the Meuse River. It was the scene of heavy fighting in World War I and World War II, notably during the Battle of the Bulge in December 1944 and January 1945. |