Corrib, Lough (lokh kor'ib) [key], lake, 68 sq mi (176 sq km), Counties Galway and Mayo, W Republic of Ireland. The irregularly shaped lake, which is 27 mi (43 km) long, drains into Galway Bay through the Corrib River. It is connected by a partly subterranean channel with Lough Mask to the north. Lough Corrib is an important transportation route; it is also a major brown-trout fishery.
