In Aldmeris, and it's derivatives,
Mora means forest, and it's [censored] everywhere. Balmora "stone forest", Sadrith Mora "mushroom forest", Morag Tong "Foresters Guild", Hermaeus Mora "Old Man of the Forest", Atmora "elder forest", Dremora "..." (okay, I don't think that one really counts).
Thus I propose that the semantic content of the term in Merrish minds and on Merrish tongues has much more breadth and depth than does the conventional Mannish one familiar to all of us.