1. An ash of the western coast of North America
   - Sorbus sitchensis

Type of: mountain ash

• Boann
• boar
• boar thistle
• board
• board foot
• board game
• board measure
• board meeting
• board member
• board of appeals
• board of directors
• board of education
• board of regents
• board of selectmen
• Board of Trade unit
• board of trustees
• board rule
• board up
• boarder
• boarding
• boarding card
• boarding pass
• boarding school
• boardinghouse
• boardroom