EARTH-NUT, the English name for Conopodium denuda tum, a member of the family Umbelliferae, which has a brown, tuber-like root-stock the size of a chestnut. It grows in woods and fields, has a slender, flexuous, smooth stem 2 to 3 ft. high, much-divided leaves, and small white flowers in many-rayed, ter minal, compound umbels. Though really excellent in taste and unobjectionable as food, it is disregarded in England by all but pigs and children. In Holland and elsewhere on the continent of Europe the rootstocks are generally eaten. The name is applied also to the fruit of Arachis hypogaea (family Leguminosae) which is also known as the pea-nut, ground-nut (q.v.) or monkey-nut.