septfoil

Century Dictionary and Cyclopedia

1. n. A plant, Potentilla Tormentilla. See tormentil.
2. n. A figure composed of seven lobes or leaves. Compare cinquefoil, quatrefoil, sexfoil. Specifically A figure of seven equal segments of a circle, used as an ecclesiastical symbol of the seven sacraments, seven gifts of the Holy Spirit, etc.

Wiktionary

1. n. architecture a symmetrical shape which forms the overall outline of seven partially-overlapping circles of the same diameter.
2. n. heraldry A stylized flower or leaf with seven lobes.

GNU Webster's 1913

1. n. (Bot.) A European herb, the tormentil. See tormentil.
2. n. (Arch.) An ornamental foliation having seven lobes. Cf. Cinquefoil, Quarterfoil, and Trefoil.
3. n. (Eccl.Art.), rare A typical figure, consisting of seven equal segments of a circle, used to denote the gifts of the Holy Chost, the seven sacraments as recognized by the Roman Catholic Church, etc.