What is the meaning of caffein?

noun

  • A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.
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APAWordNet. (2010). caffein. Retrieved April 24, 2019, from http://smartdefine.org/caffein/definitions/1262582
ChicagoWordNet. 2010. "caffein" http://smartdefine.org/caffein/definitions/1262582 (accessed April 24, 2019).
HarvardWordNet 2010, caffein, Smart Define, viewed 24 April, 2019, <http://smartdefine.org/caffein/definitions/1262582>.
MLAWordNet. "caffein" 23 October 2010. Web. 24 April 2019. <http://smartdefine.org/caffein/definitions/1262582>