Origin: 1350–1400; Middle English forraien, apparently by back formation from forrayour, forreour, forrier < Old French forrier, fourrier, equivalent to fo(u)rr(er), derivative of fuerre provender (see forage) + -ier-ier2
late 14c., Scottish back-formation of forreyer "raider, forager," from O.Fr. forrier, from forrer "to forage," related to fuerre "fodder" (see forage).