'Straight' in the Bible

Their feet were straight feet; and the sole of their feet was like the sole of a calf's foot; and they sparkled like burnished brass.

their wings were joined one to another; they didn't turn when they went; each one went straight forward.

Each one went straight forward: where the spirit was to go, they went; they didn't turn when they went.

Under the expanse were their wings straight, the one toward the other: each one had two which covered on this side, and every one had two which covered on that side, their bodies.

As for the likeness of their faces, they were the faces which I saw by the river Chebar, their appearances and themselves; they went every one straight forward.

But when the people of the land shall come before Yahweh in the appointed feasts, he who enters by the way of the north gate to worship shall go forth by the way of the south gate; and he who enters by the way of the south gate shall go forth by the way of the north gate: he shall not return by the way of the gate by which he came in, but shall go forth straight before him.