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caffeine

From Wiktionary

Pronunciation

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  • IPA (key): /ˈkæfiːn/ or /kæˈfiːn/
  • Audio (US)(file)

Noun

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Singular
caffeine

Plural
none

A cup of coffee contains caffeine
  1. (uncountable) Caffeine is a mild drug that acts as a stimulant in the body, making you more jittery and excited. It is in coffee and some teas.
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