noun
a coarse prickly European weed with spikes of blue flowers; naturalized in United States
• Syn: ↑blueweed, ↑blue devil, ↑blue thistle, ↑Echium vulgare
• Hypernyms: ↑herb, ↑herbaceous plant
• Member Holonyms: ↑Echium, ↑genus Echium
Useful english dictionary. 2012.