The Collaborative International Dictionary of English v.0.48:

Jamaicine \Ja*ma"i*cine\, n. [From Jamaica.] (Chem.)
   An alkaloid said to be contained in the bark of Geoffroya
   inermis, a leguminous tree growing in Jamaica and Surinam;
   -- called also jamacina. --Watts.
   [1913 Webster]