Red valerian flowers.Licensed from iStockPhoto
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A Mediterranean perennial plant (Centranthus ruber) having glabrous ovate leaves and fragrant crimson to pale red flowers borne in dense terminal clusters.