恶魔
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}]