The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]WordNet (r) 3.0 (2006):
enfeoffment n 1: under the feudal system, the deed by which a person was given land in exchange for a pledge of service