arachis

noun
ar·a·chis | \ˈa-rə-kəs, ˈer-ə-\

Definition of arachis 

1 capitalized : a small genus of mostly Brazilian herbs (family Leguminosae) with yellow flowers and pods that ripen underground — see peanut

2 plural -es : a plant of the genus Arachis

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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

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