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Noun: caffein  ka'feen or 'ka`feen [N. Amer], ka-feen [Brit]
  1. A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
    - caffeine

Derived forms: caffeins

See also: caffeinic

Type of: alkaloid

Part of: cha [Brit], char [Brit], coffee, java, tea

Encyclopedia: Caffein

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