Final answer:
The double meaning in the title 'Poison' refers to both the literal substance and the metaphorical venomous emotions or intentions that can be equally harmful.
Step-by-step explanation:
In the story Poison, the title holds a double meaning that is unveiled as the narrative progresses. Initially, the word 'poison' may refer to a literal substance used to harm or kill. But as we reach the story's conclusion, it becomes evident that 'poison' can also metaphorically signify the venomous emotions or intentions that people might harbor, such as hatred, malice, or deceit, which can be just as damaging as any physical poison. This double entendre compels readers to reflect on the broader implications of the term 'poison' within the context of human interactions and moral choices.