Real Dictionary

Jerusalem cherry in American English
either of two bushy plants (Solanum pseudo-capsicum or S. capsicastrum) of the nightshade family, with small, star-shaped, white flowers and orange to red berries, grown widely as ornamentals
noun: an Old World plant, Solanum pseudocapsicum, of the nightshade family, having white flowers and bearing cherrylike scarlet or yellow fruits, cultivated as an ornamental

Jerusalem cherry in British English
noun: a small South American solanaceous shrub, Solanum pseudo-capsicum, cultivated as a house plant for its white flowers and inedible reddish cherry-like fruit