1poi·son 
/ˈpoɪzn̩/ noun
plural poi·sons /ˈpoɪzn̩/ noun 1 : a substance that can cause people or animals to die or to become very sick if it gets into their bodies especially by being swallowed [noncount] ▪ a jar of rat poison ▪ The killer gave her victims food laced with poison. ▪ suck poison from a snake bite ▪ The villain in the play dies by drinking a vial of poison. [count] ▪ deadly poisons 2 : something (such as an idea, emotion, or situation) that is very harmful or unpleasant [noncount] ▪ Jealousy is relationship poison. [=jealousy can destroy a relationship] ▪ Hiring a carpenter is expensive and doing it yourself is slow. Pick/Choose your poison. [=neither choice is good but you have to choose one] [count] ▪ Poverty is a poison to society.
what's your poison?
informal + old-fashioned — used to ask what kind of alcoholic drink someone wants to be served
