a market-town of S. Wales, Carmarthenshire, on the Towy, 14 miles E.N.E. from Carmarthen. The town is small and ill-built, and, excepting the new church, contains no important buildings. Near the town, in 1282, Llewelyn was defeated by the forces of Edward I., under the Earl of Gloucester and Sir Edmund Mortimer. In the vicinity is Dynevor Castle, built near the ruins of an ancient fortress of the same name, for a long period the residence of the princes of S. Wales. Adjoining the town is a valuable chalybeate spring. Several productive coal and iron mines in this district are connected by a railway with the port of Llanelli. Pop. of parish (1851) 5758.