The Collaborative International Dictionary of English v.0.48:

Enactment \En*act"ment\, n.
   1. The passing of a bill into a law; the giving of
      legislative sanction and executive approval to a bill
      whereby it is established as a law.
      [1913 Webster]

   2. That which is enacted or passed into a law; a law; a
      decree; a statute; a prescribed requirement; as, a
      prohibitory enactment; a social enactment.
      [1913 Webster]

WordNet (r) 3.0 (2006):

enactment
    n 1: the passing of a law by a legislative body [syn:
         enactment, passage]
    2: a legal document codifying the result of deliberations of a
       committee or society or legislative body [syn: act,
       enactment]
    3: acting the part of a character on stage; dramatically
       representing the character by speech and action and gesture
       [syn: portrayal, characterization, enactment,
       personation]

Moby Thesaurus II by Grady Ward, 1.0:

96 Moby Thesaurus words for "enactment":
   accomplishment, achievement, act, acting, administration, aping,
   bill, bylaw, canon, characterization, commission, completion,
   concurrent resolution, conduct, constitution, decree,
   demonstration, dictate, dictation, discharge, dispatch, display,
   dumb show, edict, effectuation, embodiment, enacting, enaction,
   execution, exhibit, exhibition, exposition, exposure, form,
   formality, formula, formulary, handling, imitation, impersonation,
   implementation, incarnation, institution, joint resolution, jus,
   law, lawmaking, legislation, legislature, lex, management,
   masquerade, measure, mimesis, mimicking, mimicry, miming, opening,
   ordinance, ordonnance, ostentation, pantomime, pantomiming,
   passage, passing, performance, performing, perpetration,
   personation, personification, playing, portrayal, posing,
   prescript, prescription, presentation, presentment, production,
   projection, regulation, representation, resolution, retrospective,
   rubric, rule, ruling, show, showing, standing order, statute,
   transaction, unfolding, unfoldment, unveiling, varnishing day,
   vernissage