Cinque-foil

(singk-foil.) [ Fr. cinq, five, andfeuille, a leaf.] The five - leaved clover, a plant of the genus POTENTILLA, q. v. -(Arch.) An ornamental foliation used in arches, the tracery of windows, panellings, . It is formed by projecting points or cusps, so arranged that the intervals between them resemble five leaves. [s. 190]