[1] : The Collaborative International Dictionary of English v.0.48

madame \ma`dame"\, n.; pl. mesdames. f., fr. ma my l. mea +
   dame dame. see dame, and cf. madonna.
   my lady; -- a french title formerly given to ladies of
   quality; now, in france, given to all married women.
   --chaucer.
   1913 webster mad-apple
see also:
mesdames dame madonna 

[2] : WordNet (r) 2.0

madame
     n : title used for a married frenchwoman
     also: mesdames pl
see also:
mesdames 

[3] : Moby Thesaurus II by Grady Ward, 1.0

20 moby thesaurus words for "madame":
   frau, fraulein, miss, mistress, mlle, mme, mmes, dame, dona, donna,
   lady, madam, mademoiselle, mem-sahib, mesdames, senhora, senhorita,
   signora, signorina, vrouw

Madame >> M Words
Madame, definition of term: Madame
madame_pag1.html