any of a genus (Geum) of herbaceous plants of the rose family, with compound leaves and variously colored, usually yellow, flowers
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'avens'ME & OFr avence