The Collaborative International Dictionary of English v.0.48:

Dislocation \Dis`lo*ca"tion\, n. [Cf. F. dislocation.]
   1. The act of displacing, or the state of being displaced.
      --T. Burnet.
      [1913 Webster]

   2. (Geol.) The displacement of parts of rocks or portions of
      strata from the situation which they originally occupied.
      Slips, faults, and the like, are dislocations.
      [1913 Webster]

   3. (Surg.) The act of dislocating, or putting out of joint;
      also, the condition of being thus displaced.
      [1913 Webster]

WordNet (r) 3.0 (2006):

dislocation
    n 1: an event that results in a displacement or discontinuity
         [syn: dislocation, disruption]
    2: the act of disrupting an established order so it fails to
       continue; "the social dislocations resulting from government
       policies"; "his warning came after the breakdown of talks in
       London" [syn: dislocation, breakdown]
    3: a displacement of a part (especially a bone) from its normal
       position (as in the shoulder or the vertebral column)