‖ deffait,a.Her.Obs.—0 [F. défait, in OF.desfait, deffait, undone, deprived, etc.] 1727Bailey vol. II, Deffait, is used to signify the Head of a Beast cut off smooth, the same as Decapité.1727–51Chambers Cycl., Deffait or Decapité, a term used by the French heralds.