Examples from the Web for soapwort
It was common wayside "Bouncing Bet," but the Harvester called it "soapwort."
The Soapwort comes to us from Europe, where in some localities it is a common wild flower.
Next came carrying the couch grass, wild alum, and soapwort into the store-room.
Other sapotoxins are obtained from the roots of soapwort and from several species of Gypsophila.The Chemistry of Plant Life|Roscoe Wilfred Thatcher
Polypetalous corolla of Soapwort, of five petals with long claws or stalk-like bases.The Elements of Botany|Asa Gray