The Collaborative International Dictionary of English v.0.48:

Charivari \Cha*ri`va*ri"\, n. [F.]
   A mock serenade of discordant noises, made with kettles, tin
   horns, etc., designed to annoy and insult; -- called also
   shivaree.

   Syn: shivaree, charivari, callithump, callathump.
        [1913 Webster]

   Note: It was at first performed before the house of any
         person of advanced age who married a second time.
         [1913 Webster]

WordNet (r) 3.0 (2006):

shivaree
    n 1: a noisy mock serenade (made by banging pans and kettles) to
         a newly married couple [syn: shivaree, chivaree,
         charivari, callithump, callathump, belling]