Definition of circean poison in English English dictionary
A draught of any kind that is magically and fatally infatuating, such as applause. The expression is named after Circe, from Greek mythology and particularly from her actions in the The Odyssey, when she tempted men to excess before turning them into pigs
So soon the worm that dies not is also upon him—in its fang Circean poison to make the victim one with his plague.