The Collaborative International Dictionary of English v.0.48:

Exode \Ex"ode\n. [L. exodium, Gr. ? (sc. ? song) fr. ? belonging
   to an exit, or to the finale of a tragedy, fr. ?: cf. F.
   exode. See Exodus.]
   1. Departure; exodus; esp., the exodus of the Israelites from
      Egypt. [Obs.] --L. Coleman. --Bolingbroke.
      [1913 Webster]

   2. (Gr. Drama) The final chorus; the catastrophe.
      [1913 Webster]

   3. (Rom. Antiq.) An afterpiece of a comic description, either
      a farce or a travesty.
      [1913 Webster]

WordNet (r) 3.0 (2006):

exode
    n 1: a farcical afterpiece in the ancient Roman theater