mountain ash 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.
any of a genus (Sorbus) of small trees or shrubs of the rose family, with compound leaves and clusters of white flowers and red or orange berries
mountain ash definition by American Heritage Dictionary
Any of various deciduous trees of the genus Sorbus, such as the rowan, having clusters of small white flowers and bright orange-red berries arranged in clusters.
European mountain ash