'Straight' in the Bible

Their legs were straight, and the soles of their feet were like the hooves of a calf, sparkling like the gleam of polished bronze.

Their wings were touching. The creatures did not turn as they moved; each one went straight ahead.

Each creature went straight ahead. Wherever the Spirit wanted to go, they went without turning as they moved.

Their faces looked like the same faces I had seen by the Chebar Canal. Each creature went straight ahead.