1. Of or belonging to the class Crustacea
   - crustacean 
2. Being or having or resembling a hard crust or shell

See also: crust, Crustacea

• buttermilk biscuit
• buttermilk pancake
• butternut
• 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