WordNet (r) 3.0 (2006):

silverbush
    n 1: silvery hairy European shrub with evergreen foliage and
         pale yellow flowers [syn: Jupiter's beard, silverbush,
         silver-bush, Anthyllis barba-jovis]
    2: deciduous unarmed North American shrub with silvery leaves
       and fruits [syn: silverberry, silver berry, silverbush,
       silver-bush, Elaeagnus commutata]