Definition of caffeine

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  • caffeine is a valid Scrabble US word with a point value of 16
  • caffeine is a valid Scrabble UK word with a point value of 16
  • caffeine is a valid Words with friends word with a point value of 18

Definition of caffeine

  • a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects (noun)

    Synonyms

    1. caffein

See definition of caffeine in Merriam Webster