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)

• dwindles
• dwindling
• dwine
• dwined
• dwines
• dwining
• DWP
• dwt
• DY
• Dy
• dyable
• dyad
• dyadic
• dyads
• Dyak
• dyarchies
• dyarchy
• dybbuk
• dybbukim
• dybbuks
• dye
• dyeable
• dyed
• dyed-in-the-wool
• dye-house