Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- any of several spireas; esp., either of two common species (Spiraea alba and S. latifolia)
- any of a genus (Filipendula) of plants of the rose family, with fragrant, white, pink, or purple flowers in clusters
Used by arrangement with John Wiley & Sons, Inc.
The 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.
- Either of two North American shrubs (Spiraea alba or S. latifolia) having umbel-shaped clusters of white flowers.
- Any of various perennial herbs of the genus Filipendula in the rose family.