Etymology tree Anatolianbor. Ancient Greek προῦμνον (proûmnon)bor. Latin prūnum Vulgar Latin *prūmabor. Proto-West Germanic *plūmā Old English plūme Middle English plomme English plum From Middle English plomme, ploume, from Old English plūme, from Proto-West Germanic *plūmā, borrowed from Latin prūnum. Doublet of prune.