a pretty large town of Italy, in the territory of the church, and patrimony of St Peter, with a bishop's see. It is seated on a mountain, near the river Peglia, ten miles W. of Orvieto, and 57 N. by W. of Rome. It takes its name from a fall ACR

Acquaria fall of water near it, and is now almost desolate. E. Long. 11. 53. N. Lat. 42. 43.