Source : Webster's Revised Unabridged Dictionary (1913)

Enfeoffment \En*feoff"ment\, n. (Law)
      (a) The act of enfeoffing.
      (b) The instrument or deed by which one is invested with
          the fee of an estate.

Source : WordNet®

enfeoffment
     n : under the feudal system, the deed by which a person was
         given land in exchange for a pledge of service