buhrstone, also burrstone /bûrˈstōn/

1. A variety of quartz, containing many small empty cells, which give it a roughness of surface particularly adapted for millstones
2. A millstone made of this

• broadways
• broadwise
• Brobdingnag
• Brobdingnagian
• brocade
• brocaded
• brocades
• brocage
• brocages
• brocard
• brocards
• Broca's area
• brocatel
• brocatelle
• brocatelles
• brocatels
• broccoli
• beaming
• beamingly
• beamings
• beamish
• beamless
• beamlet
• beamlets
• beams