quatrefoil /katˈər-foil or katˈrə-foil/ or quatrefeuille /-fœ-ē or -fīl/

1. A four-petalled flower or leaf of four leaflets
2. An openwork design or ornament divided by cusps into four lobes (architecture)

• salt pans
• saltpeter
• saltpeters
• saltpetre
• saltpetreman
• saltpetremen
• saltpetre-paper
• saltpetres
• salt pit
• salt pits
• salt plug
• salt plugs
• shadings
• shadoof
• shadoofs
• shadow
• shadow box
• shadow-box
• shadow-boxed
• shadow boxes
• shadow-boxes
• shadow-boxing
• shadow cabinet
• shadow cabinets
• shadowcast