noun
drunken spree; drinking binge; alcoholic frenzy
Refers to a bout of heavy, disorderly drinking. The word is somewhat literary or old-fashioned; in modern casual speech, expressions like 飲み騒ぎ or どんちゃん騒ぎ are more common.
彼は乱酒の末に、路上で倒れていた。
After a drunken spree, he collapsed on the street.
乱酒が原因で、家族を失った人もいる。
Some people have lost their families because of drinking binges.