- 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 foil 2.