A forest in Doriath (S/55) with the many beech trees (LotR/469). Its initial element is neldor “beech” (SA/neldor), and its final element appears to be the abstract noun ending -eth.

Conceptual Development: The name Ilk. Neldoreth appeared in Silmarillion drafts from the 1930s (LR/126), and was designated Doriathrin [Ilkorin] in The Etymologies, with the same derivation as given above (Ety/NEL).