The flowers of the ragged robin.
ragged robin 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.
a perennial plant (Lychnis flos-cuculi) of the pink family, with loose clusters of pink or red flowers
ragged robin definition by American Heritage Dictionary
A European perennial plant (Lychnis flos-cuculi) having opposite clasping leaves and panicles of reddish or white flowers with deeply lobed petals. Also called cuckooflower.