Pronunciation: (singk'foil"),[key] —n. 1. any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans(creeping cinquefoil), of the Old World, or P. argentea(silvery cinquefoil), of North America.
2. Also called quinquefoil, quintefoil.Archit.a panellike ornament consisting of five lobes, divided by cusps, radiating from a common center.
3. Heraldry.a charge in the form of a five-leaved clover.