| Noun | 1.kaffir boom - small semi-evergreen tree of South Africa having dense clusters of clear scarlet flowers and red seedsErythrina lysistemon, Transvaal kafferboomcoral tree, erythrina - any of various shrubs or shrubby trees of the genus Erythrina having trifoliate leaves and racemes of scarlet to coral red flowers and black seeds; cultivated as an ornamental | | 2.kaffir boom - small semi-evergreen broad-spreading tree of eastern South Africa with orange-scarlet flowers and small coral-red seeds; yields a light soft wood used for fence posts or shinglesCape kafferboom, Erythrina caffracoral tree, erythrina - any of various shrubs or shrubby trees of the genus Erythrina having trifoliate leaves and racemes of scarlet to coral red flowers and black seeds; cultivated as an ornamental |