Definition of European mountain ash
: a mountain ash (Sorbus aucuparia) of Eurasia that typically reaches a height of 20 to 40 feet (6.1 to 12.2 meters) and has showy clusters of small white flowers and bright orange to red berrylike fruits that are technically pomes
Note:
The European mountain ash is often grown as an ornamental tree and has become naturalized in parts of North America.
— called also
mountain ash, rowan; compare american mountain ash 
