The definition of Peripheral nervous system is the nervous system outside of the brain and spinal cord. It also connects to the central nervous system. The central nervous system includes the brain and spinal cord. The peripheral nervous system contain all the nerves that are outside of the central nervous system. The main role of the peripheral nervous system is to connect the central nervous system to the organs, limbs, and skin. To learn more go to www.verywellminded.com/what-is-the-peripheral-nervous-system-2795465