'Straight' in the Bible

and their feet are straight feet, and the sole of their feet is as a sole of a calf's foot, and they are sparkling as the colour of bright brass;

joining one unto another are their wings, they turn not round in their going, each straight forward they go.

And each straight forward they go, whither the spirit is to go, they go, they turn not round in their going.

And under the expanse their wings are straight, one toward the other, to each are two covering on this side, and to each are two covering on that side -- their bodies.

As to the likeness of their faces, they are the faces that I saw by the river Chebar, their appearances and themselves; each straight forward they go.