soapwort definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Saponaria) of plants of the pink family, with bright, colorful flowers and sap that forms a lather with water, including the bouncing Bet
soapwort definition by American Heritage Dictionary
See bouncing Bet.
Origin: From its yielding a soapy substance when the leaves are bruised.