a market-town of England, Monmouthshire, 16 miles N.W. of Newport, in a populous district, containing important coal pits and iron mines. The town has entirely grown up since 1800, when there were only three houses here; and it now consists of five principal streets, with a square and several smaller streets, and contains a good town-hall, market-house, parish church, Independent, Baptist, Wesleyan, and Calvinistic Methodist chapels, and several schools. The people are for the most part employed in the iron and coal mines, and blast houses. A weekly market and three annual fairs are held here; and large quantities of coal and iron are exported by railway and the Monmouthshire canal. Pop. 8305.