a town of Prussia, in the government of Königsberg, stands at the entrance of the Frische Haff, 25 miles W. of Königsberg, of which it is the port. It is defended by a fort, and has a good harbour, a lighthouse, a Protestant church, and a school of navigation. Ship-building and fishing are actively carried on here. The entrance to the Frische Haff is very narrow and shallow, so that large vessels have to discharge their cargoes here, which gives the town a considerable trade. Pop. 3491.