Source : Webster's Revised Unabridged Dictionary (1913)

Displace \Dis*place"\, v. t. [imp. & p. p. {Displaced}; p. pr. &
   vb. n. {Displacing}.] [Pref. dis- + place: cf. F.
   d['e]placer.]
   1. To change the place of; to remove from the usual or proper
      place; to put out of place; to place in another situation;
      as, the books in the library are all displaced.

   2. To crowd out; to take the place of.

            Holland displaced Portugal as the mistress of those
            seas.                                 --London
                                                  Times.

   3. To remove from a state, office, dignity, or employment; to
      discharge; to depose; as, to displace an officer of the
      revenue.

   4. To dislodge; to drive away; to banish. [Obs.]

            You have displaced the mirth.         --Shak.

   Syn: To disarrange; derange; dismiss; discard.

Source : WordNet®

displace
     v 1: take the place of
     2: force to move; "the refugees were displaced by the war"
        [syn: {force out}]
     3: move (people) forcibly from their homeland into a new and
        foreign environment; "The war uprooted many people" [syn:
        {uproot}, {deracinate}]
     4: cause to move, both in a concrete and in an abstract sense;
        "Move those boxes into the corner, please"; "I'm moving my
        money to another bank"; "The director moved more
        responsibilities onto his new assistant" [syn: {move}]
     5: remove or force from a position of dwelling previously
        occupied; "The new employee dislodged her by moving into
        her office space" [syn: {dislodge}, {bump}]
     6: put out of its usual place, position, or relationship; "The
        colonists displaced the natives" [syn: {dislocate}]