The Sword of Elendil was forged anew by Elvish smiths, and on its blade was traced a device of seven stars set between the crescent Moon and the rayed Sun, and about them was written many runes; for Aragorn son of Arathorn was going to war upon the marches of Mordor. Very bright was that sword when it was made whole again; the light of the sun shone redly in it, and the light of the moon shone cold, and its edge was hard and keen. And Aragorn gave it a new name and called it Andúril, Flame of the West.

(LoTR, II-3)

But even as the orc flung down the truncheon and swept out his scimitar, Andúril came down upon his helm. There was a flash like flame and the helm burst asunder. The orc fell with cloven head.

(LoTR, II-5)

Aragorn threw back his cloak. The elven-sheath glittered as he grasped it, and the bright blade of Andúril shone like a sudden flame as he swept it out. 'Elendil!' he cried. 'I am Aragorn son of Arathorn and am called Elessar, the Elfstone, Dúnadan, the heir of Isildur Elendil's son of Gondor. Here is the Sword that was Broken and is forged again! Will you aid me or thwart me? Choose swiftly!'

(LoTR, III-2)

Slowly Aragorn unbuckled his belt and himself set his sword upright against the wall. 'Here I set it,' he said; 'but I command you not to touch it, nor to permit any other to lay hand on it. In this elvish heath dwells the Blade that was Broken and has been made again. Telchar first wrought it in the deeps of time. Death shall come to any man that draws Elendil's sword save Elendil's heir.'

(LoTR, III-6)

Narsil - The sword of Elendil, made by Telchar of Nogrod, that was broken when Elendil died in combat with Sauron; from the shards it was reforged for Aragorn and named Anduril. 364-5

andúne - 'sunset, west' in Andúnië, to which corresponds in Sindarin annun, cf. Annúminas, and Henneth Annun 'window of the sunset' in Ithilien. The ancient root of these words, ndu, meaning 'down, from on high', appears also in Quenya numen 'the way of the sunset, west' and in Sindarin dun 'west', cf. Dúnedain, Adûnaic, adun in Adunakhôr, Anadûnë was a loan from Eldarin speech.

ril - 'brilliance' in Idril, Silmaril; also in Andúril (the sword of Aragorn) and in mithril (Moria-silver).

(Silm, Appendix)