1. Perennial of western North America having white flowers
   - white prairie aster

Type of: aster

• swap
• swap file
• swap space
• sward
• swarf
• swarm
• swart
• swarthiness
• swarthy
• swash
• swashbuckler
• swashbuckling
• swastika
• swat
• SWAT squad
• SWAT team
• swatch
• swath
• swathe
• swather
• swathing
• swatter
• sway
• swayback
• swaybacked