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The area north of Washington Ave and south of South St in Philadelphia. Also known as "South Philly Light". The more sophisticated side of south Philadelphia, populated by yuppies and older neighborhood folk.

opposite of so wash
I went to the Headhouse Farmers Market and bought some delicious organic apples and cheese for my Sunday afternoon wine tasting! It's good to be no wash!
by Grouse Pilot 1 November 14, 2010