Any of various mostly tropical and subtropical trees composing the genus Morus (family Moraceae), native to Asia, North and South America, and Africa and characterized by flowers in male or female catkins and typically cordate leaves; esp. (more fully black or common mulberry) M. nigra, with flavourful purple fruit, and (more fully white mulberry) M. alba, with insipid white fruit, both of which have been cultivated for many centuries, the former chiefly for its fruit, the latter as a food plant for silkworms.——牛津当代大辞典

a dark purple fruit that can be eaten, or the tree on which this fruit grows.——朗文当代大辞典  @en