§ Elements in Quenya and Sindarin Names The Silmarillion

nár 'fire' in Narsil, Narya; present also in the original forms of Aegnor (Aikanáro 'Sharp Flame' or 'Fell Fire') and Fëanor (Feanaro 'Spirit of Fire'). The Sindarin form was naur, as in Sammath Naur, the Chambers of Fire in Orodruin. Derived from the same ancient root (a)nar was the name of the Sun, Quenya Anar (also in Anárion), Sindarin Anor (cf. Minas Anor, Anorien).