The'ine noun [ French théine , from New Latin thea . See Theiform .] (Chemistry) See Caffeine . Called also theina . Found on http://www.encyclo.co.uk/webster/T/39
Theine is an alternative name for caffeine, the term theine usually being given to a drug prepared from the dried leaves of certain plants. Found on http://www.probertencyclopaedia.com/browse/GT.HTM