a village and parish in the Isle of Wight, formerly a market-town, and capital of the island. It is situated at the base of a steep conical hill, on which stands its castle, one mile S.W. of Newport. The original fortress is supposed to have been built by the Saxons as early as the sixth century. Various additions were made to it at different times, the last by Queen Elizabeth, when the outer walls which still remain were made to inclose about 20 acres; and the old fortress, with its keep, covers an area of two acres. Here Charles I. was confined for thirteen months previous to his being delivered up to the parliamentary forces. Within the walls is a remarkable well 200 feet in depth. The church is of great antiquity, and adjoining it are some remains of a Cistercian priory. Pop. of parish (1851) 6712.