The Collaborative International Dictionary of English v.0.48:

Referment \Re*fer"ment\ (r?*f?r"ment), n.
   The act of referring; reference. --Laud.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Re-ferment \Re`-fer*ment"\ (r?`f?r*m?nt"), v. t. & i.
   To ferment, or cause to ferment, again. --Blackmore.
   [1913 Webster]