Source : Webster's Revised Unabridged Dictionary (1913)

Prune \Prune\, n. [F. prune, from L. prunum a plum. See {Plum}.]
   A plum; esp., a dried plum, used in cookery; as, French or
   Turkish prunes; California prunes.

   {German prune} (Bot.), a large dark purple plum, of oval
      shape, often one-sided. It is much used for preserving,
      either dried or in sirup.

   {Prune tree}. (Bot.)
   (a) A tree of the genus {Prunus} ({P. domestica}), which
       produces prunes.
   (b) The West Indian tree, {Prunus occidentalis}.

   {South African prune} (Bot.), the edible fruit of a
      sapindaceous tree ({Pappea Capensis}).