WordNet (r) 3.0 (2006):

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]