Source : Webster's Revised Unabridged Dictionary (1913)

Multifoil \Mul"ti*foil\, n. [Multi- + foil.] (Arch.)
   An ornamental foliation consisting of more than five
   divisions or foils. [R.] See {Foil}.

Multifoil \Mul"ti*foil\, a.
   Having more than five divisions or foils.