Sîr Angren
From Tolkien Gateway
Sîr Angren was the older, Sindarin name for the river better known by the name the Rohirrim gave it - the Isen.[1] Both names have the same meaning; "the iron river".
References
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), Unfinished Tales, "Aldarion and Erendis: The Mariner's Wife", note 6