Ĕarth'-nŭt, n.

n. (Bot.) (a.) The root of Bunium bulbocastanum, an umbelliferous plant, which is farinaceous, sweet, and considered to be nourishing. Loudon. (b.) The seed-vessel and seed of the Arachis hypogæa, a leguminous plant, called also pea-nut. It lies upon or is buried in the earth, where it ripens. Baird.