1. Any of various trees of the genus Sorbus 
2. Tree having wood similar to the alpine ash; tallest tree in Australia and tallest hardwood in the world
   - Eucalyptus regnans 
3. Low-growing ash of Texas
   - Fraxinus texensis

Derived forms: mountain ashes

Type of: angiospermous tree, ash, ash tree, eucalypt, eucalyptus, eucalyptus tree, flowering tree

Part of: genus Sorbus, Sorbus

Encyclopedia: Mountain ash

• Hume Cronyn
• humectant
• humeral
• humeral veil
• humerus
• humic
• humic acid
• humic shale
• humic substance
• humid
• humidex
• humidifier
• humidify
• humidity
• humidly
• humidness
• humidor
• humification
• humified
• humify
• humiliate
• humiliated
• humiliating
• humiliatingly
• humiliation