WordWeb Online

1. A state of depression
   "he had a bad case of the blue devils";
   - blues, megrims, vapors [US], vapours [Brit, Cdn]

1. A coarse prickly European weed with spikes of blue flowers; naturalized in United States
   - blueweed, blue thistle, viper's bugloss, Echium vulgare
    
2. The sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
   - amobarbital sodium, blue, blue angel, Amytal

Type of: amobarbital, depression, herb, herbaceous plant

Part of: Echium, genus Echium

Encyclopedia: Blue devils