What does the title "Main Street" have to do with the story?

In both a literal and a symbolic sense, Main Street is the heart of the town. When Celeste's mom first visits Peterborough, she finds postcards in the pharmacy located on Main Street. Next to the pharmacy is a coffee shop where people drink egg creams and Cokes. Main Street is quaint, a representation of New England and New Hampshire. Yet it is also a place where people watch each other, a symbol for the way in which the town is hostile to outsiders and hostile to those who are not like them. After Celeste moves back to New York, the narrator talks of how the other girls now meet her at the pharmacy in the afternoons, an indication that the color in her life is gone once again.