prune

Prune comes from Middle English prune, from Old French prune, from Vulgar Latin *prūna, itself formed from the neuter plural of Latin prūnum. That Latin word came from Ancient Greek proûnon, a variant of proûmnon ("plum"), which the Greeks had borrowed from a language spoken in Asia Minor.

The word's meaning has stayed remarkably steady across all these languages — it has always pointed to a plum or its dried form.

Prune is a doublet of plum, meaning both words descend from the same root but arrived in English by different paths.