- butterfly orchid
- butterfly orchis
- butterfly pea
- butterfly stroke
- butterfly valve
- butterfly weed
- butterier
- butteries
- butteriest
- buttering
- buttermilk
- buttermilk sky
- butternut
- butternuts
- butternut squash
- butters
- butterscotch
- butterweed
- butterwort
- buttery
- butter–and–eggs
- buttes
- Butte Vocational-Technical Center
- butthead
- buttheads