Definition of cinquefoil
1 : any of a genus (Potentilla) of herbs and shrubs of the rose family usually having 5-lobed leaves and 5-petaled flowers —called also potentilla
2 : a design enclosed by five joined foils
Origin and Etymology of cinquefoil
Middle English sink foil, from Anglo-French cincfoille, from Latin quinquefolium, from quinque five + folium leaf — more at blade
First Known Use: 14th century
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