Top Definition
An annually, free of admission 4 day/4 night celebration in Oswego, NY. Live Concerts, crafts, food, drinks and FIREWORKS. Everyone who grew up in Oswego or went to College here enjoys coming back for this huge summer festival. Over 7,000 members reported "attending" on facebook this year.
Dude, I will deifnatly be back for Harborfest this year!
by kmcds22 July 26, 2011

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