'Castle' in the Bible

and a letter unto Asaph the keeper of the king's forest, that he may give me timber to make beams for the gates of the castle which appertaineth to the house, and for the wall of the city, and for the house that I shall enter into. And the king granted me, according to the good hand of my God upon me.

that I gave my brother Hanani, and Hananiah the governor of the castle, charge over Jerusalem; for he was a faithful man, and feared God above many.