pinny/ʹpini/ noun (pl -ies) (pl pinnies)

• 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
• buttonhook
• button mushroom
• button quail
• buttons
• button-through
• butt out
• buttress