Source : Webster's Revised Unabridged Dictionary (1913)

Haunt \Haunt\ (?; 277), v. t. [imp. & p. p. {Haunted}; p. pr. &
   vb. n. {Haunting}.] [F. hanter; of uncertain origin, perh.
   from an assumed LL. ambitare to go about, fr. L. ambire (see
   {Ambition}); or cf. Icel. heimta to demand, regain, akin to
   heim home (see {Home}). [root]36.]
   1. To frequent; to resort to frequently; to visit
      pertinaciously or intrusively; to intrude upon.

            You wrong me, sir, thus still to haunt my house.
                                                  --Shak.

            Those cares that haunt the court and town. --Swift.

   2. To inhabit or frequent as a specter; to visit as a ghost
      or apparition.

            Foul spirits haunt my resting place.  --Fairfax.

   3. To practice; to devote one's self to. [Obs.]

            That other merchandise that men haunt with fraud . .
            . is cursed.                          --Chaucer.

            Leave honest pleasure, and haunt no good pastime.
                                                  --Ascham.

   4. To accustom; to habituate. [Obs.]

            Haunt thyself to pity.                --Wyclif.

Haunted \Haunt"ed\, a.
   Inhabited by, or subject to the visits of, apparitions;
   frequented by a ghost.

         All houses wherein men have lived and died Are haunted
         houses.                                  --Longfellow.

Source : WordNet®

haunted
     adj 1: having or showing excessive or compulsive concern with
            something; "became more and more haunted by the stupid
            riddle"; "was absolutely obsessed with the girl"; "got
            no help from his wife who was preoccupied with the
            children"; "he was taken up in worry for the old
            woman" [syn: {obsessed}, {preoccupied}, {taken up(p)}]
     2: showing emotional affliction or disquiet; "her expression
        became progressively more haunted"
     3: inhabited by or as if by apparitions; "a haunted house"