'Launderer's' in the Bible

So the LORD told Isaiah, "Go out to meet Ahaz, you and your son Shear-jashub, at the end of the aqueduct of the Upper Pool that proceeds along the highway to Launderer's Field.

But who will survive the day when he comes? Or who can stand when he appears? Because he's like a refiner's fire and a launderer's soap,