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

• Pesah
• pesantran
• pesantren
• pescatarian
• pescetarian
• peseta
• pesewa
• Peshawar
• peshmerga
• peskiness
• pesky
• peso
• pessary
• pessimal
• pessimism
• pessimist
• pessimistic
• pessimistically
• pessimum
• pest
• pester
• pestered
• pesterer
• pestering
• pesthole