barberryPronunciation: /ˈbɑːb(ə)ri/Definition of barberry noun (plural barberries) a spiny shrub which typically has yellow flowers and red berries, frequently grown for ornamental hedging. Genus Berberis, family Berberidaceae: many species Origin: late Middle English: from Old French berberis (see berberis). The change in the ending was due to association with berrybarberry in other Oxford dictionaries Definition of barberry in the US English dictionary