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]

The Collaborative International Dictionary of English v.0.48:

dispossessed \dispossessed\ adj.
   physically or spiritually homeless or deprived of security.

   Syn: homeless, roofless.
        [WordNet 1.5]

              made a living out of shepherding dispossessed
              people from one country to another  --James Stern

WordNet (r) 3.0 (2006):

dispossessed
    adj 1: physically or spiritually homeless or deprived of
           security; "made a living out of shepherding dispossed
           people from one country to another"- James Stern [syn:
           dispossessed, homeless, roofless]