bereth is Sindarin for 'queen' or 'spouse'.
From OS barathi (the -i causing umlaut of a to e before disappearing)., PQ barathî, root BARATH.
It is unrelated to root BERÉTH "beech, birch". Also, it doesn't contain the feminine ending -eth.
- ↑ The Road Goes Ever On, A Song Cycle, p. 74
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, "Part Three: The Etymologies"