What is "oystermouth"

Oystermouth (a corruption of the Welsh name Ystum Llwynarth or Ystumllwynarth) is a village and electoral ward in the district of Mumbles, Swansea, Wales. It is part of the Mumbles community (civil parish).

The electoral ward consists of some or all of the following areas: Oystermouth, the Mumbles, Thistleboon, Limeslade, in the parliamentary constituency of Gower. The ward is bounded by Newton to the west, West Cross to the north and Swansea Bay to the south and east. it had a population of around 4,100.