Definition
A treadwheel is a large wheel turned by people or animals treading on steps fitted inside it. It's a historical device used to generate power, like a very early human-powered engine. Imagine a hamster wheel, but much larger and for humans or oxen. Think of it as the ancestor of the modern treadmill, only less about fitness and more about function. It was commonly used to power mills, cranes, or other machinery. Basically, itβs an old-school way to convert walking motion into useful work.