Narsil is the sword that cuts the One Ring from Sauron’s hand in J.R.R. Tolkien’s legendarium. Isildur uses the broken sword’s hilt-shard after Elendil, Narsil’s wielder, falls during the final battle of the Last Alliance.
Narsil is later reforged as Andúril, the Flame of the West, for Aragorn. This distinction matters: Narsil is the original sword, while Andúril is its restored form. The sword’s history therefore connects the ancient kingdoms of Elendil and Isildur with Aragorn’s claim to the thrones of Gondor and Arnor.
Glamdring is the sword of Gandalf, and Orcrist is the Goblin-cleaver associated with Thorin Oakenshield. Those weapons belong to different stories and characters. Narsil’s significance comes not only from combat but also from its role as a hereditary symbol of kingship and the defeat of Sauron’s first incarnation.