The peanut is the edible seed of the plant, Arachis hypogaea. Althoughcalled a nut, the peanut is a member of the pea family (FamilyFabaceae) and the fruit is not a nut, but a legume or pod. Peanutsdevelop underground in a woody pod, usually with two seeds to a pod.The peanut plant is a hairy, taprooted annual that measures 1 to 1.5feet in height. Peanuts are also known as groundnuts (because they growunderground), earthnuts, goobers, goober peas, pindas, pinders, Manilanuts and monkey nuts (although the last of these is often used to meanthe entire pod, not just the seeds).