The great werewolf servant of Sauron who was slain by Huan (S/174). His name appears to be a combination of draug “(were)wolf” (SA/draug) and luin “blue”.
Conceptual Development: The name ᴱN. Draugluin first appeared in the Lays of Beleriand from the 1920s where it was glossed “werewolf pale” (LB/205), so that at this stage its second element might have been a variant of ᴱN. lhui “pale” (PE13/149), also appearing later as Ilk. luin “pale” (Ety/LUG²). The name N. (or Ilk.?) Draugluin appeared in Silmarillion drafts from the 1930s glossed only as “Werewolf” (LR/134), so the intended meaning of the name after Tolkien abandoned the Ilkorin language is unclear.
A noun for “wolf”, most notably appearing as an element in the name of the great werewolf S. Draugluin. In The Etymologies of the 1930s, N. draug “wolf” was derived from the root ᴹ√DARAK (Ety/DARÁK).