purple osier

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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