Peanut

Peanut, also known as goober or groundnut (Arachis hypogaea), low, bushy, leguminous plant cultivated in tropical and subtropical regions. The “nut,” the most popular in the United States, is a protein-rich fruit containing 1–3 seeds, and is produced when the yellow flowers grow down into the ground to mature after pollination. Peanuts are eaten fresh or roasted, are ground to make peanut butter, and yield an oil used for cooking oil, margarine, industrial purposes, and soap manufacturing.