Open English Wordnet
Nouns
(n)blueweed, blue devil, blue thistle, viper's bugloss, Echium vulgarea coarse prickly European weed with spikes of blue flowers; naturalized in United States
(n)amobarbital sodium, blue, blue angel, blue devil, Amytalthe sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic