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

gamboge \gamboge"\, n.
   a concrete juice, or gum resin, produced by several species
   of trees in siam, ceylon, and malabar. it is brought in
   masses, or cylindrical rolls, from cambodia, or cambogia, --
   whence its name. the best kind is of a dense, compact
   texture, and of a beatiful reddish yellow. taken internally,
   it is a strong and harsh cathartic and emetic. written also
   camboge.
   1913 webster

   note: there are several kinds of gamboge, but all are derived
         from species of garcinia, a genus of trees of the
         order guttiferae. the best siam gamboge is thought
         to come from garcinia hanburii. ceylon gamboge is
         from g. morella. g. pictoria, of western india,
         yields gamboge, and also a kind of oil called gamboge
         butter. gambogian
see also:
camboge garcinia guttiferae garcinia hanburii g. morella g. pictoria 

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