The Collaborative International Dictionary of English v.0.48:

Dispossess \Dis`pos*sess"\ (?; see Possess), v. t. [imp. & p.
   p. Dispossessed; p. pr. & vb. n. Dispossessing.] [Pref.
   dis- + possess: cf. F. d['e]poss['e]der.]
   To put out of possession; to deprive of the actual occupancy
   of, particularly of land or real estate; to disseize; to
   eject; -- usually followed by of before the thing taken away;
   as, to dispossess a king of his crown.
   [1913 Webster]

         Usurp the land, and dispossess the swain. --Goldsmith.
   [1913 Webster]

WordNet (r) 3.0 (2006):

dispossess
    v 1: deprive of the possession of real estate

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "dispossess":
   bereave, boot out, bounce, cut off, disendow, disherison,
   disinherit, dislodge, disown, disseise, divest, drive out, eject,
   evict, expel, expropriate, foreclose, kick out, lose, oust,
   put out, rob, throw out, turn out, unhouse, unkennel