Meaning

noun an erect or climbing bean or pea plant of the family Leguminosae

noun the fruit or seed of any of various bean or pea plants consisting of a case that splits along both sides when ripe and having the seeds attach to one side of the case

noun the seedpod of a leguminous plant (such as peas or beans or lentils)

originBorrowed from French légume, from Latin legūmen (“bean”). Doublet of legumen.

Etymology from Wiktionary, CC BY-SA 3.0