a town of Portugal, in the province of Alentejo, on a hill in the midst of a beautiful and fertile region, containing extensive chestnut forests, 49 miles N.N.E. of Evora. It is walled, but derives its chief strength from its position. The streets are narrow, steep, and irregular; but the houses are in general well built. The chief buildings are the Gothic cathedral and episcopal palace. Woollen cloth is manufactured here; and timber and chestnuts are exported to Lisbon. Pop. 5800.