What is an example of metonymy in the play The Crucible by Arthur Miller?

An example of metonymy in The Crucible is the use of the word "crucible" to refer to the town of Salem, Massachusetts, during the Salem witch trials. The crucible is a metaphor for the intense, oppressive atmosphere of fear and suspicion that pervades the town, as well as the intense pressure that the characters are under. The word "crucible" also evokes the idea of testing and purification, which is a theme that runs throughout the play.