silver willow

Từ điển WordNet v3.1 - WordNet Dictionary

noun

North American willow with greyish silky pubescent leaves that usually blacken in drying
• Syn:
silky willow, Salix alba sericea, Salix sericea
• Hypernyms:
willow, willow tree
• Member Holonyms:
Salix, genus Salix