Definition of "caffein" []

• Alternative spelling of caffeine. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "Certain trees growing wild in the Comoro Islands and Madagascar are known as caffein-free coffee trees."
• "Coffee, as is well known, contains an active principle known as caffein which acts as a stimulant to the nervous system and in small quantities is very beneficial."
• "Though the flavors of tea, coffee, and cocoa are so different, they all depend for their effect upon a spicy-tasting substance, called caffein from its having been first separated out of coffee."