Source : Webster's Revised Unabridged Dictionary (1913)

Possess \Pos*sess"\ (?; 277), v. t. [imp. & p. p. {Possessed};
   p. pr. & vb. n. {Possessing}.] [L. possessus, p. p. of
   possidere to have, possess, from an inseparable prep. (cf.
   {Position}) + sedere to sit. See {Sit}.]
   1. To occupy in person; to hold or actually have in one's own
      keeping; to have and to hold.

            Houses and fields and vineyards shall be possessed
            again in this land.                   --Jer. xxxii.
                                                  15.

            Yet beauty, though injurious, hath strange power,
            After offense returning, to regain Love once
            possessed.                            --Milton.

   2. To have the legal title to; to have a just right to; to be
      master of; to own; to have; as, to possess property, an
      estate, a book.

            I am yours, and all that I possess.   --Shak.

   3. To obtain occupation or possession of; to accomplish; to
      gain; to seize.

            How . . . to possess the purpose they desired.
                                                  --Spenser.

   4. To enter into and influence; to control the will of; to
      fill; to affect; -- said especially of evil spirits,
      passions, etc. ``Weakness possesseth me.'' --Shak.

            Those which were possessed with devils. --Matt. iv.
                                                  24.

            For ten inspired, ten thousand are possessed.
                                                  --Roscommon.

   5. To put in possession; to make the owner or holder of
      property, power, knowledge, etc.; to acquaint; to inform;
      -- followed by of or with before the thing possessed, and
      now commonly used reflexively.

            I have possessed your grace of what I purpose.
                                                  --Shak.

            Record a gift . . . of all he dies possessed Unto
            his son.                              --Shak.

            We possessed our selves of the kingdom of Naples.
                                                  --Addison.

            To possess our minds with an habitual good
            intention.                            --Addison.

   Syn: To have; hold; occupy; control; own.

   Usage: {Possess}, {Have}. Have is the more general word. To
          possess denotes to have as a property. It usually
          implies more permanence or definiteness of control or
          ownership than is involved in having. A man does not
          possess his wife and children: they are (so to speak)
          part of himself. For the same reason, we have the
          faculties of reason, understanding, will, sound
          judgment, etc.: they are exercises of the mind, not
          possessions.

Source : WordNet®

possessed
     adj 1: influenced or controlled by a powerful force such as a
            strong emotion; "by love possessed" [syn: {obsessed},
            {possessed(p)}]
     2: in a murderous frenzy as if possessed by a demon; "the
        soldier was completely amuck"; "berserk with grief"; "a
        berserk worker smashing windows" [syn: {amuck}, {amok}, {berserk},
         {demoniac}, {demoniacal}, {possessed(p)}]