a town of Portugal, in the province of Estremadura. It is situated on the Tagus, near its junction with the Zezare, which is navigable for barges. The situation is delightful, on the upper part of a sloping hill, with a country below it covered with olive trees, and interspersed with vineyards. One of Buonaparte's generals had the title of duke of this place conferred on him. It has 4 monasteries, 1 hospital, 1 poor-house, and 3500 inhabitants. Its trade with Lisbon employs 100 boats.