Any of several trees with reddish wood; especially an alder of western North America, Alnus rubra, and a South African tree, the rooi els, Cunonia capensis (family Cunoniaceae).
Origin
Mid 18th century.
Definition of red alder in US English:
red alder
noun
Any of several trees with reddish wood; especially an alder of western North America, Alnus rubra, and a South African tree, the rooi els, Cunonia capensis (family Cunoniaceae).