noun · Figurative words or actions used to beguile, delude, or enchant someone.

他被对方灌了迷魂汤，竟然把所有的秘密都说了出来。

noun · A mythical potion given to souls before reincarnation to make them forget their previous lives.

传说投胎转世之前都要喝下一碗迷魂汤，忘却前尘往事。