Source : Webster's Revised Unabridged Dictionary (1913)

Rerefief \Rere"fief`\ (r?r"f?f`), n. [F. arri[`e]re-fief. See
   {Rear} hinder, and {Fief}.] (Scots Law)
   A fief held of a superior feudatory; a fief held by an under
   tenant. --Blackstone.