Reroot is a term used to describe the process of replanting a plant in order to encourage it to grow again. This is done by taking hold of the plant and placing it in a new pot or soil, providing it with the necessary nutrients and water to help it grow. Rerooting is often used when a plant has become root-bound or is not thriving in its current environment. It is also a great way to propagate plants and can be used to create new plants from existing ones.