THE, an arm of the German Ocean, on the E. coast of England, between Norfolkshire and Lincolnshire, about 25 miles long by 15 broad. It receives the rivers Ouse, Nen, Welland, and Witham, flowing through the flat and fenny country on its shores. The wash contains many shoals, which are dry at low-water; and measures have been recently adopted for draining and reclaiming a great part of it. There are two channels, called respectively the Boston deeps and the Lynn deeps, marked out by buoys, and having from 4 to 12 fathoms of water.