Translation of "Sheath" in Portuguese

Soon as he saw the captured city fall, / the palace-gates burst open, and the foe / dealing wild riot in his inmost hall, / up sprang the old man and, at danger's call, / braced o'er his trembling shoulders in a breath / his rusty armour, took his belt withal, / and drew the useless falchion from its sheath, / and on their thronging spears rushed forth to meet his death.

Vendo a cidade capturada, as portas / do palácio arrombadas e seu lar / pelo inimigo profanado, o pobre ancião / põe sobre os ombros trêmulos o fardo / inútil da armadura aposentada / havia tanto tempo e, em vão cingindo a espada, / caminha para o meio da caterva / celerada, caminha para a morte.