The Collaborative International Dictionary of English v.0.48:

Epilogue \Ep"i*logue\ (?; 115), n. [F. ['e]pilogue, L. epilogus,
   fr. Gr. ? conclusion, fr. ? to say in addition; 'epi` upon,
   besides + ? to say. See Legend.]
   1. (Drama) A speech or short poem addressed to the spectators
      and recited by one of the actors, after the conclusion of
      the play.
      [1913 Webster]

            A good play no epilogue, yet . . . good plays prove
            the better by the help of good epilogues. --Shak.
      [1913 Webster]

   2. (Rhet.) The closing part of a discourse, in which the
      principal matters are recapitulated; a conclusion.
      [1913 Webster]

WordNet (r) 3.0 (2006):

epilogue
    n 1: a short speech (often in verse) addressed directly to the
         audience by an actor at the end of a play [syn: epilogue,
         epilog]
    2: a short passage added at the end of a literary work; "the
       epilogue told what eventually happened to the main
       characters" [syn: epilogue, epilog]

Moby Thesaurus II by Grady Ward, 1.0:

132 Moby Thesaurus words for "epilogue":
   PS, Parthian shot, Z, act, addendum, affix, afterpiece,
   afterthought, afterword, allonge, apodosis, appendix, back matter,
   bit, catastrophe, ceasing, cessation, chaser, chorus, coda,
   codicil, colophon, commentary, conclusion, consequence,
   consummation, continuance, continuation, crack of doom,
   culmination, curtain, curtain call, curtain raiser, curtains,
   death, decease, denouement, destination, destiny, divertimento,
   divertissement, doom, double take, dying words, effect, enclitic,
   end, end point, ending, envoi, eschatology, exode, exodus,
   expiration, expository scene, fate, final solution, final twitch,
   final words, finale, finality, finis, finish, follow-through,
   follow-up, goal, hoke act, infix, interlineation, interlude,
   intermezzo, intermission, interpolation, introduction, izzard,
   last, last breath, last gasp, last things, last trumpet,
   last words, latter end, marginalia, note, number, omega,
   parting shot, payoff, period, peroration, postface, postfix,
   postlude, postscript, prefix, proclitic, prologue, quietus,
   refrain, resolution, resting place, rider, routine, scene, scholia,
   second thought, sequel, sequela, sequelae, sequelant, sequent,
   sequitur, shtick, sketch, skit, song and dance,
   stand-up comedy act, stoppage, stopping place, striptease,
   subscript, suffix, supplement, swan song, tag, tail, term,
   terminal, termination, terminus, turn, windup