The drupaceous fruit of two South African shrubs of the genus Carissa (formerly Arduina) (Carissa bispinosa and Carissa grandiflora). It is also called amatungulu. [1913 Webster]
the shrub bearing the natal plum{1}; a very large closely branched South African shrub (Carissa grandiflora) of the dogbane family having forked bright green spines, white flowers, shiny leaves, and red berries. [WordNet 1.5]