The Collaborative International Dictionary of English v.0.48:

Feoff \Feoff\ (?; 277), v. t. [imp. & p. p. Feoffed; p. pr. &
   vb. n.. Feoffing.] [OE. feffen, OF. feffer, fieffer, F.
   fieffer, fr. fief fief; cf. LL. feoffare, fefare. See
   Fief.] (Law)
   To invest with a fee or feud; to give or grant a corporeal
   hereditament to; to enfeoff.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Feoff \Feoff\, n. (Law)
   A fief. See Fief.
   [1913 Webster]

WordNet (r) 3.0 (2006):

feoff
    n 1: a piece of land held under the feudal system [syn: fief,
         feoff]