The Collaborative International Dictionary of English v.0.48:

Confarreation \Con*far`re*a"tion\, n. [L. confarreatio, fr.
   confarreare to marry; con- + farreum (sc. libum cake) a spelt
   cake, fr. farreus made of spelt, fr. far a sort of grain.]
   (Antiq.)
   A form of marriage among the Romans, in which an offering of
   bread was made, in presence of the high priest and at least
   ten witnesses.
   [1913 Webster]