a burgh of barony and seaport-town of Scotland, in the county of Haddington, on the S. shore of the Firth of Forth, 8 miles E. of Edinburgh. It is meanly and irregularly built, and contains a plain parish church, a Free church, a parish school, and an hospital. The manufacture of salt is carried on here; and there are potteries, a distillery, and a brewery. The people are also largely employed in the oyster fishery. Near the town was fought the battle of Prestonpans, in which the Pretender entirely defeated the forces of Sir John Cope, September 21, 1745. Pop. (1851) 1640.