messieurs/meʹsyuh, məʹsyuhz/ noun

• butterfingers
• butterfish
• butterfly
• butterfly effect
• butterfly fish
• butterfly nut
• butterfly valve
• butter icing
• buttermilk
• butter muslin
• butternut
• butternut squash
• butterscotch
• butter up
• butterwort
• buttery
• buttie
• butt in
• butt joint
• buttock
• buttock-clenching
• button
• button-down
• buttonhole
• buttonhole stitch