n.
Any of several perennial herbs of the genus Petasites in the composite family, native to northern temperate regions and having large basal leaves and dense clusters of usually whitish or purplish flower heads.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.