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Noun: white alder
  1. Tree of western United States
    - mountain alder, Alnus rhombifolia
  2. Shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers
    - sweet pepperbush, pepper bush, summer sweet, Clethra alnifolia

Derived forms: white alders

Type of: alder, alder tree, bush, shrub

Part of: Alnus, genus Alnus

Encyclopedia: White alder