noun
1. a coarse prickly European weed with spikes of blue flowers; naturalized in United States
• Syn: ↑blueweed, ↑blue thistle, ↑viper's bugloss, ↑Echium vulgare
• Hypernyms: ↑herb, ↑herbaceous plant
• Member Holonyms: ↑Echium, ↑genus Echium
2. the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
• Syn: ↑amobarbital sodium, ↑blue, ↑blue angel, ↑Amytal
• Hypernyms: ↑amobarbital
Useful english dictionary. 2012.