(Abermaw, mouth of the Maw, or Mawddach, in Cardigan Bay, the only haven in Merionethshire, North Wales), a small seaport on the north of the estuary. Pop. of urban district (1901), 2214. The ride to Dolgelley (Dolgellau) is fine. The parish church, Llanaber, 12 m. from Barmouth, is on a cliff overlooking the sea. Barmouth is a favourite bathing place, on the Cambrian railway. It is a centre for coaching in summer, especially to and through the Vale of Llangollen.