a wheel: the round turning part that carries a chariot, cart, or stand
This is an everyday, concrete word. It names the physical wheel that lets something roll: the wheels of a war chariot, the wheels of a farm cart used to thresh grain, and the wheels built into the movable bronze stands in Solomon's temple. Wherever it appears, it points to the same simple object, so a reader can picture it without special knowledge.
Most of its occurrences cluster in one place: the prophet Ezekiel's vision of God's throne moving on wheels. There the wheels are described as gleaming, towering, and turning in any direction at once (the famous "wheel within a wheel"). What makes that scene strange is the vision itself, not the word. The word is doing ordinary work; it simply names the wheels the prophet saw.
Because the object is so plain, the word carries little of the theological weight that many biblical terms do. Its interest comes almost entirely from where it turns up: on the chariots the sea swept away at the exodus, on the threshing cart a proverb uses as a picture of justice, and above all under the moving throne in Ezekiel.