a town of France, capital of an arrondissement of the same name, in the department of Loire Inférieure, on the left bank of the Chere, 35 miles N.N.E. of Nantes. It takes its name from a castle, founded in 1015, of which remains still exist. It has manufactures of woollen stuffs and confectionary, and some trade in iron, coal, wood, and corn. Pop. (1851) 4010.