资料来源 : WordNet®

silky willow
     n 1: small shrubby tree of western North America (Alaska to
          Oregon) [syn: {Sitka willow}, {Salix sitchensis}]
     2: North American willow with grayish silky pubescent leaves
        that usually blacken in drying [syn: {silver willow}, {Salix
        alba sericea}, {Salix sericea}]