multifoil

[ muhl-tuh-foil ]

/ ˈmʌl təˌfɔɪl /

Architecture

a foil, especially one having more than five lobes.

(of an arch, window opening, etc.) having the form of a foil with more than five lobes.

Origin of multifoil

First recorded in 1825–35; multi- + foil²

Near it is a double piscina, formed by a couple of shafts with capitals hollowed out with multifoil cusping.

Some Account of Gothic Architecture in Spain |George Edmund Street
Multifoil cusped arch, invented by the Moors at Cordova in the 10th century.

Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 |Various
Multifoil, mul′ti-foil, adj. having more than five foils or arcuate divisions.

Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) |Various

multifoil

/ (ˈmʌltɪˌfɔɪl) /

an ornamental design having a large number of foils See also trefoil (def. 4), quatrefoil (def. 2), cinquefoil (def. 2)