- a flower with four petals or a leaf with four leaflets
- Archit. a circular design made up of four converging arcs
Origin of quatrefoilMiddle English quaterfoyle ; from Middle French quatrefeuille ; from quatre (; from Classical Latin quattuor, four) + feuille (; from Classical Latin folium, leaf: see foil)
- A representation of a flower with four petals or a leaf with four leaflets, especially in heraldry.
- Architecture Tracery or an ornament with four foils or lobes.
Origin of quatrefoilMiddle English quaterfoile : Old French quatre, four; see quatrain + Old French foil, leaf; see foil2.