noun Etymology: German Kaffein, from Kaffee coffee, from French café Date: circa 1823 a bitter alkaloid C 8 H 10 N 4 O 2 found especially in coffee, tea, cacao, and kola nuts and used medicinally as a stimulant and diuretic
CAFFEINE
Meaning of CAFFEINE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012