- torrunn
- thunder, Irish toran, a great noise, Early Irish torand, thunder, Welsh tarann, Cornish taran, tonitruum: *toranno-s; Greek $$Gtóros, sound; Lithuanian tàrti, say. Gaulish Taranis, the Gaulish Jove or Thor, and Gaelic tàirneanach show an a grade of the root.
Etymological dictionary of the Gaelic language. Alexander Gairm Publications. 1982.