ARDEE, a town of Ireland, county of Louth, on the river Dee, whence its ancient name of Atherdee, "Town on the Dee." It was formerly a place of considerable importance, but now consists chiefly of miserable cabins. It has two old
castles, one of which is used as a court-house; a church of the thirteenth century; a large Roman Catholic chapel; savings bank; dispensary; and several schools. It has a considerable malt and corn trade. Pop. in 1851, 2752.