1capitalized: a small genus of mostly Brazilian herbs (family Leguminosae) with yellow flowers and pods that ripen underground — see peanut
2plural -es: a plant of the genus Arachis
History and Etymology for arachis
borrowed from New Latin (Linnaeus), probably derived from the presumed base of Latin arachidna, arachidnē, the geocarpic legume Lathyrus amphicarpos, borrowed from Greek aráchidna, of non-Indo-European origin
