'Door' in the Bible

Nebuchadnezzar then approached the door of the furnace of blazing fire and called: “Shadrach, Meshach, and Abednego, you servants of the Most High God—come out!” So Shadrach, Meshach, and Abednego came out of the fire.

And I saw in the vision; and when I saw it, I was in the strong town Shushan, which is in the country of Elam; and in the vision I was by the water-door of the Ulai.