noun the dwarf ginseng (aralia trifolia).
2. groundnut ·noun the fruit of the arachis hypogaea (native country uncertain); the peanut; the earthnut.
3. groundnut ·noun a leguminous, twining plant (apios tuberosa), producing clusters of dark purple flowers and having a root tuberous and pleasant to the taste.
4. groundnut ·noun a european plant of the genus bunium (b. flexuosum), having an edible root of a globular shape and sweet, aromatic taste;
called also earthnut, earth chestnut, hawknut, and pignut.