1. Not mixed with extraneous elements
   - plain, sheer, unmixed

See also: pure

• butternut squash
• butternut tree
• butterscotch
• butterweed
• butterwort
• buttery
• butthead
• buttie
• buttinsky
• buttle
• buttock
• buttocks
• button
• button fern
• button mangrove
• button pink
• button snakeroot
• button tree
• button up
• button-down
• button-quail
• button-shaped
• buttoned
• buttoned-down
• buttoned-up