The Collaborative International Dictionary of English v.0.48:

Consummation \Con`sum*ma"tion\ (k[o^]n`s[u^]m*m[=a]"sh[u^]n), n.
   [L. consummatio.]
   The act of consummating, or the state of being consummated;
   completion; perfection; termination; end (as of the world or
   of life).
   [1913 Webster]

         'T is a consummation
         Devoutly to be wished.                   --Shak.
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         From its original to its consummation.   --Addison.
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         Quiet consummation have,
         And renown['e]d be thy grave.            --Shak.
   [1913 Webster]

   Consummation of marriage, completion of the connubial
      relation by actual cohabition.
      [1913 Webster]

WordNet (r) 3.0 (2006):

consummation
    n 1: the completion of marriage by sexual intercourse
    2: the act of bringing to completion or fruition