polyfoil

== English == === Etymology === From poly- + foil. === Noun === polyfoil (plural polyfoils) (architecture) Multifoil. === See also === trefoil quatrefoil cinquefoil sexfoil octofoil === References === “polyfoil”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.