plow sack Share definition Flag A cheap or low class prostitute with no standards. As oposed to a high class prostitute. Mike: Hey Dave you hear Steve hired a prostitute?Dave: Yeah, I heard she was a bit of a plow sack. plow sack by dave182 July 22, 2011 0 0 Get merch Get the plow sack mug. Buy Now — $32.95 See more merch