The term 'Spinning Parts' refers to the rotors found in many machines, such as turbines and engines. Rotors are cylindrical components that spin around an axis, providing the necessary motion for the machine to function. They are usually made of metal and are connected to a shaft, which is driven by a motor or other power source. Rotors are essential components of many machines, and they are often referred to as 'spinning parts' due to their rotating motion.