The Collaborative International Dictionary of English v.0.48:

Reenact \Re`en*act"\, Re-enact \Re`-en*act"\(r?`?n*?kt"), v. t.
   1. To enact again.
      [1913 Webster]

   2. Specifically: To enact into law, again; as, Congress
      reenacted the environmental law, which had expired.
      [WordNet 1.5]

   3. To perform (an action) as a simulation of a prior event;
      as, She re-enacted what had happened earlier that day; the
      historical society reenacted the signing of the
      Declaration of Independence; the militia reenacted the
      battle of Trenton.

   Syn: model, reenact, simulate, act out.
        [WordNet 1.5 + PJC]

WordNet (r) 3.0 (2006):

reenact
    v 1: enact or perform again; "They reenacted the battle of
         Princeton"
    2: enact again; "Congress reenacted the law"
    3: act out; represent or perform as if in a play; "She reenacted
       what had happened earlier that day" [syn: enact, reenact,
       act out]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "reenact":
   give back, place in, put back, reactivate, reconstitute, reconvert,
   recruit, reestablish, refill, reform, rehabilitate, reinstall,
   reinstate, reinstitute, reintegrate, reinvest, replace, replenish,
   restore, return, revest