Pronunciation: (shles'wig-hōl'stīn; Ger. shlās'vik-hôl'shtīn),[key] —n. 1. two contiguous duchies of Denmark that were a center of international tension in the 19th century: Prussia annexed Schleswig 1864 and Holstein 1866.
2. a state of N Germany, including the former duchies of Holstein and Lauenburg and part of Schleswig. 2,564,565; 6073 sq. mi. (15,728 sq. km).Cap.:Kiel.