blue thistle

美 [bluː ˈθɪsl]英 [bluː ˈθɪsl]
  • 蓝蓟
blue thistleblue thistle

noun

1
a coarse prickly European weed with spikes of blue flowers;naturalized in United States
Synonym: blueweed blue devil viper's bugloss Echium vulgare

数据来源:WordNet