cinque·foil (sĭngkfoil′, săngk-)
1. Any of various herbs or shrubs chiefly of the genus Potentilla of the rose family, native to northern temperate regions and having yellow or sometimes white or red flowers and compound leaves that in some species bear five leaflets. Also called potentilla.
2. Architecture A design having five sides composed of converging arcs, usually used as a frame for glass or a panel.
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