caffeine

Pronunciation

• IPA ^(key): /ˈkæfiːn/ or /kæˈfiːn/

• Audio (US)

  (file)

Noun

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.

Related words

• caffeinated