caffein

Noun
  1. A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects (synset 114785301)
    is a type of: alkaloid - natural bases containing nitrogen found in plants
    substance meronym:
    • coffee, java - a beverage consisting of an infusion of ground coffee beans
    • tea - a beverage made by steeping tea leaves in water
    same as: caffeine

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