knapskull, knapscull or knapscal /napˈskəl/ (obs Scot)

A kind of helmet

• butt-shaft
• butt-shafts
• butt-ugly
• butt welding
• butty
• butty-collier
• butty-colliers
• butty-gang
• butty-gangs
• buttyman
• butut
• bututs
• but what
• butyl
• butyl alcohol
• butylene
• butylenes
• butyl rubber
• butyls
• butyraceous
• butyrate
• butyrates
• butyric
• butyric acid
• buvette