WordNet sense 1 (widely cultivated American plant cultivated in tropical and warm regions; showy yellow flowers on stalks that bend over to the soil so that seed pods ripen underground):

Arachis hypogaea, peanut vine

WordNet sense 2 (pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms):

goober, groundnut, earthnut, goober pea, monkey nut

WordNet sense 3 (of little importance or influence or power; of minor status):

insignificant

WordNet sense 4 (of lesser importance or stature or rank):

minor