HEIDE, a town in the Prussian province of Schleswig Holstein, on a small plateau between the marshes and moors bordering the North Sea, 35 m. N.N.W. of GlUckstadt. Pop. In 1447 it became the capital of the Ditmarsh peasant republic, but on June 13, 1J59 it was the scene of the complete defeat of the peasant forces by the Danes.