Fimbrethil was the Sindarin name of Wandlimb, Treebeard's long-lost entwife.
Fimbrethil consists of the words fim and brethil.
Different translations given by J.R.R. Tolkien were: "slender-beech", "slim-birch", and "slender princess".
- ↑ J.R.R. Tolkien, The Lord of the Rings, Appendix F
- ↑ J.R.R. Tolkien, 1966 Index
- ↑ J.R.R. Tolkien, "Words, Phrases and Passages in Various Tongues in The Lord of the Rings", in Parma Eldalamberon XVII (edited by Christopher Gilson), p. 82