Top Definition
A small town in central mass. that resides close to the quabbin reservoir. It's full of old people who stare at you. If you go here the only thing to do is take pictures of trees. I mean come one, who does that? Dont go to this town. Its lame.
paul-"hey bill wanna go to petersham?"
bill-"Why go now? the leaves aren't good yet."
by Colin melanson February 22, 2009
5 Words related to Petersham

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