dictionary.pt
caffeine
nounfemininegeneral usecommon/kɐfɐˈinɐ/ca·fe·í·na
Definition
1A crystalline compound that is found especially in tea and coffee plants and is a stimulant of the central nervous system.
Usage examples
“Coffee contains caffeine, which can keep you awake.”
“Some energy drinks have high levels of caffeine.”
Common combinations
caffeine contentcaffeine-freecaffeine addictioneffects of caffeine