purple willow

Từ điển WordNet v3.1 - WordNet Dictionary

noun

Eurasian osier having reddish or purple twigs and bark rich in tannin
• Syn:
red willow, red osier, basket willow, purple osier, Salix purpurea
• Hypernyms:
osier
• Member Holonyms:
Salix, genus Salix