Source : Webster's Revised Unabridged Dictionary (1913)

Enfeoff \En*feoff"\ (?; see {Feoff}, 277), v. t. [imp. & p. p.
   {Enfeoffed}; p. pr. & vb. n. {Enfeoffing}.] [Pref. en- +
   feoff, fief: cf. LL. infeofare, OF. enfeffer, enfeofer.]
   1. (Law) To give a feud, or right in land, to; to invest with
      a fief or fee; to invest (any one) with a freehold estate
      by the process of feoffment. --Mozley & W.

   2. To give in vassalage; to make subservient. [Obs.]

            [The king] enfeoffed himself to popularity. --Shak.

Source : WordNet®

enfeoff
     v : put in possession of land in exchange for a pledge of
         service, in feudal society; "He enfeoffed his son-in-law
         with a large estate in Scotland"