The Collaborative International Dictionary of English v.0.48:

Menagerie \Men*ag"er*ie\, n. [F. m['e]nagerie, fr. m['e]nager to
   keep house, m['e]nage household. See Menial, Mansion.]
   1. A place where animals are kept and trained.
      [1913 Webster]

   2. A collection of wild or exotic animals, kept for
      exhibition.
      [1913 Webster]

WordNet (r) 3.0 (2006):

menagerie
    n 1: a collection of live animals for study or display
    2: the facility where wild animals are housed for exhibition
       [syn: menagerie, zoo, zoological garden]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "menagerie":
   Festschrift, ana, anthology, aquarium, body, chrestomathy,
   collectanea, collection, compilation, corpus, data, florilegium,
   fund, holdings, library, museum, raw data, treasure, zoo,
   zoological garden