blue devil
  惡魔
  blue devil
       n 1: a coarse prickly European weed with spikes of blue flowers;
            naturalized in United States [syn: 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 [syn: amobarbital
          sodium, blue, blue angel, Amytal]