wild plum noun7 •Any of wild-growing plum. •An American wild plum (Prunus americana), native to eastern North America. •A serviceberry (Amelanchier, a genus in the Rosaceae), producing small fruits lacking a pit. •A kaffir plum (Harpephyllum caffrum), an Afrotropical plum. •An emu bush (Podocarpus drouynianus), a conifer native to Australia. •Any member of species Terminalia platyphylla of trees native to the Kimberly of Western Australia. •A peeling-bark ochna (Ochna pulchra), of Africa. formswild plums