'Fortress' in the Bible

and a letter to Asaph the keeper of the king’s forest, that he may give me timber to make beams for the gates of the fortress which is by the temple, for the wall of the city and for the house to which I will go.” And the king granted them to me because the good hand of my God was on me.

then I put Hanani my brother, and Hananiah the commander of the fortress, in charge of Jerusalem, for he was a faithful man and feared God more than many.