1The red-skinned seed of any of several kinds of legume; especially any of various varieties of the common bean Phaseolus vulgaris, and the adzuki bean, Vigna angularis. Chiefly in plural.
2Australian The deep red wood of the tree Dysoxylum muelleri (family Meliaceae), of New South Wales and Queensland.
Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer. From red + bean.