Groundnut

1.

The fruit of the Arachis hypogaea (native country uncertain); the peanut; the earthnut.

2.

A leguminous, twining plant (Apios tuberosa), producing clusters of dark purple flowers and having a root tuberous and pleasant to the taste.

3.

The dwarf ginseng (Aralia trifolia).

4.

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.