natal plum

from WordNet (r) 3.0 (2006)

natal plum
    n 1: very large closely branched South African shrub having
         forked bright green spines and shiny leaves [syn: {natal
         plum}, {amatungulu}, {Carissa macrocarpa}, {Carissa
         grandiflora}]
    2: South African shrub having forked spines and plumlike fruit;
       frequently used as hedging [syn: {hedge thorn}, {natal plum},
       {Carissa bispinosa}]
    3: edible scarlet plumlike fruit of a South African plant [syn:
       {carissa plum}, {natal plum}]

from The Collaborative International Dictionary of English v.0.48

Natal plum \Na*tal" plum`\
   1. (Bot.) 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]

   2. 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 +PJC]

from The Collaborative International Dictionary of English v.0.48

amatungulu \amatungulu\ n.
   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. Also called {natal plum}.

   Syn: natal plum, Carissa macrocarpa.
        [WordNet 1.5 +PJC]

   2. the fruit of the amatungulu[1].
      [PJC]