The great tragic hero of the First Age (S/198), his name is a combination of tûr “victory” (SA/tur) and ind “heart”.
Conceptual Development: In the earliest Lost Tales, this character’s name was already G. Túrin (LT2/70), and so remained in all of Tolkien’s writing. It was translated “Lord” in some early notes (PE15/61), but it seems unlikely this translation remained valid. In The Etymologies from the 1930s, N. Túrin was derived from a combination of N. tûr and ind, which is the source of the derivation given above (Ety/ID, TUR).
tûr (“mastery,victory”) + ind (“inner thought, heart, mind”)