What is the meaning of Black_plum?

A tree or fruit derived from a tree of various species:

1. Diospyros australis (syn. Diospyros microcarpa; (yellow persimmon), (Australian date plum), native to eastern Australia.

   Diospyros australis (syn. Diospyros microcarpa; (yellow persimmon), (Australian date plum), native to eastern Australia.

   Planchonella australis (black apple, yellow buttonwood, yellow bulletwood; syn. Pouteria australis), native to eastern Australia.

   Prunus domestica (European plum), the common cultivated plum.

   Prunus nigra (Canada plum), native to eastern North America.

   Syzygium cumini (Java plum), native to south and southeast Asia.

   Vitex doniana, native to Africa.

   A dark purple color, attributable to anthocyanins in fruit.

   Source: wiktionary.org