The forest where Thingol and Melian met (S/55), a combination of nan(d) “valley”, êl “star” and moth “dusk” (SA/nan(d), moth).

Conceptual Development: In “The Lay of Leithian Recommenced” from the 1950s, Tolkien considered some variant names for this forest: S. Glad-uial >> Glath-uail >> Gilammoth (LB/349). The first of these also appeared on the Silmarillion map from the 1950s (WJ/183, 188 note #48).

A rejected name for Nan Elmoth in “The Lay of Leithian Recommenced” from the 1950s (LB/349). The name might be to be a combination of gil “star” and moth “dusk”.

Another name for Nan Elmoth appearing on the Silmarillion map from the 1950s (WJ/183, 188 note #48). Christopher Tolkien stated in his notes that he could not find this name anywhere else in his father’s writings, but Christopher apparently forgot that it had appeared as a rejected name in “The Lay of Leithian Recommenced” from the same period, revised to Gilammoth and finally to Nan Elmoth (LB/349). The name appears to be a combination of glad “wood” and uial “twilight”.