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

• scrolled
• scroller
• scrollers
• scrolling
• scrolls
• scroll saw
• scroll saws
• scrollwise
• scrollwork
• scrollworks
• scrooge
• Scrooge
• scrooged
• scrooges
• Scrooges
• scrooging
• scroop
• scrooped
• scrooping
• scroops
• scrophularia
• scrophulariaceous
• scrophularias
• scrota
• scrotal