1. Thistle of western North America having white woolly leaves
   - woolly thistle

Type of: plume thistle, plumed thistle

• butterfly ray
• butterfly stroke
• butterfly valve
• butterfly weed
• butterfly-shaped
• butterflyfish
• butterhead lettuce
• buttermilk
• buttermilk biscuit
• buttermilk pancake
• butternut
• butternut squash
• butternut tree
• butterscotch
• butterweed
• butterwort
• buttery
• butthead
• buttie
• buttinsky
• buttle
• buttock
• buttocks
• button
• button fern