From Tolkien Gateway

Nimbrethil was a region of birchwoods that lay in the land of Arvernien, on the northern shore of the Bay of Balar.[1] Wood from the forests of Nimbrethil was used by Eärendil to construct his ship Vingilot.[2]

The woods were recalled by Bilbo in his song at Rivendell.[3]

Etymology[edit | edit source]

Nimbrethil is Sindarin, composed of the words nim and brethil. Nimbrethil is translated to "silver birches", and can also mean "white princess".[4]