Tír fo Thuinn
[Ir. tonn, wave, i.e. Land under Wave].
Imagined realm under the seas, one of the many places where the Tuatha Dé Danann would have fled after their defeat by the Milesians. The ‘Hard Gilly’ leads the Fianna here in Tóraigheacht an Ghiolla Dheacair [The Pursuit of the Hard Gilly/ Difficult Servant]. In parts of Gaelic Scotland such as the isle of Tiree, Tír fo Thuinn might also be known as An tEilean Uaine [the Green Island]. See also OTHERWORLD; SUBMERGED CITIES.