or Ratzemburg, an ancient town of Germany, in the circle of Lower Saxony, and in the duchy of Lauenburgh, with a bishop's see and a castle. The town depends on the duchy of Lauenburgh, and the cathedral church on that of Ratzeburg. It is seated on an eminence, and almost surrounded with a lake 25 miles in length and three in breadth. This place is noted for its excellent beer. E. Long. 10. 58. N. Lat. 53. 47.