noun
1. small shrubby maple of eastern North America; scarlet in autumn
• Syn: ↑mountain maple, ↑Acer spicatum
• Hypernyms: ↑maple
2. tree of western United States
• Syn: ↑white alder, ↑Alnus rhombifolia
• Hypernyms: ↑alder, ↑alder tree
• Member Holonyms: ↑Alnus, ↑genus Alnus
* * *
noun1. : any of several trees of the genus Alnus; especially : a tree (A. rhombifolia) that is native to upland regions of the western United States
2. : mountain maple
Useful english dictionary. 2012.