talath (“flat surface, plain”), rhúnen (“eastern”) Lack of lenition probably shows that rh could sometimes resist lenition, functioning as r, cf. Amrûn [HKF].
Sindarin
rhúnen
adjective. eastern
rhúnen
adjective. eastern
talath rhúnen
place name. East Vale
Talath Rhúnen
noun. eastern plain
rhunen
eastern
rhunen (lenited ?thrunen or ?runen the lenition product of rh- is uncertain), pl. rhúnin
rhunen
eastern
(lenited ?thrunen or ?runen – *the lenition product of rh- is uncertain)*, pl. rhúnin
Another name for Thargelion translated “East Vale” (S/124), a combination of talath “plain” and rhúnen “eastern” (SA/talath, rómen).
Conceptual Development: In Silmarillion drafts from the 1930s, this name was Ilk. Radhrost (LR/265), which was designated an Ilkorin name in The Etymologies (Ety/RAD, ROS²).