Ashton-under-Lyne, a parliamentary borough in Lancashire, about six miles E. of Manchester, on the N. bank of the river Tame. It returns one member. The borough is ancient, but its growth dates from the foundation of the Lancashire cotton mills in 1769. The proximity of coal fields enabled the power-loom to be early adopted. Yarns, ginghams, and calicoes are made here in large quantities. The town possesses many admirable public institutions and a fine park.