Esgalduin
From Tolkien Gateway
Esgalduin was a major tributary of the Sirion, which rose in the dark heights of the Ered Gorgoroth, and flowed southwestward to meet the Sirion on the western borders of Doriath. It marked the boundary between the forests of Neldoreth and Region.
Etymology
Sindarin esgal = veil and duin = river, meaning "River under veil"[1]
The name is said to be Ilkorin
References
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, Part Three: "The Etymologies"