Gabilān
From Tolkien Gateway
Gabilân is the Khuzdul name for the river Sirion.
It probably means "Great River"
Etymology
The word obviously contains the word gabil "great".
*ân is perhaps a word meaning "river" or just a nominal ending[1] (eg. "Great One")
References
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The War of the Jewels, p. 336