silver berry n 1: deciduous shrubby tree of Europe and western Asia having grey leaves and small yellow fruits covered in silvery scales; sometimes spiny [syn: {Russian olive}, {silver berry}, {Elaeagnus augustifolia}] 2: deciduous unarmed North American shrub with silvery leaves and fruits [syn: {silverberry}, {silver berry}, {silverbush}, {silver-bush}, {Elaeagnus commutata}]