What does アル中 mean?
アル中 is a Japanese noun meaning “alcoholism” in English. It is written as アル中 in kanji, アルちゅう in hiragana, and aruchuu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
そんなにがぶがぶ飲み続けると、アル中になるのがオチですよ。
If you go on drinking so much, you may well end up an alcoholic.