or AMROM, a German island in the North Sea, off the coast of Schleswig-Holstein to the south of Sylt. Pop. (1900) 900. It is 6 m. long and 3 m. broad, with an area of 102 sq. m., and is reached from the mainland by a regular steamboat service to Wittdün, a favourite sea-bathing resort; or at low water by carriage from Föhr. The larger part of Amrum consists of a treeless sandy expanse, but a fringe of rich marshes affords good pasture-land. The principal place is Nebel, connected by a light railway with Wittdün. (See also FRISIAN ISLANDS.)