Zar'roc was the Rider's sword of the fallen Dragon Rider Morzan and had been once wielded by Eragon. Brom kept it following Morzan's death and later gave it to Eragon. Murtagh, Morzan's son and Eragon's half-brother, then reclaimed it from Eragon, since it was rightfully his by birth, at the Second Battle of the Burning Plains. The name "Zar'roc" meant "misery" in the Ancient Language. The name "misery" complemented the Sword's actions, for Zar'roc was known for its destruction of many Dragons and their Riders.