legume

noun

1.
an erect or climbing bean or pea plant of the family Leguminosae
Derived from:
leguminous
2.
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
3.
the seedpod of a leguminous plant (such as peas or beans or lentils)