The small wood that lay to the north of the Aelin-uial; the only part of the kingdom of Doriath to the west of the river Sirion, it was encompassed within the Girdle of Melian.
Notes
1
The name Nivrim comes from nivon, a word in the Doriathrin dialect for 'west', and Sindarinrim meaning 'border', so Nivrim was the west-march (or western borderland) of Doriath. On the other side of the kingdom lay Radhrim, the east-march beyond Aros, otherwise known as Arthórien.