This Internet Slang page is designed to explain what the meaning of ALCHY is. The slang word / acronym / abbreviation ALCHY means . Internet Slang. alchy definition. a nickname for an alcoholic; see alchie "hey alchy! how many have you had tonight? thirty-eight!? whoa, there! you need at least fifty to call it a. Do you know what does ALCHY mean? Now know the meaning of ALCHY used in internet slang. We have over abbreviation used over the internet in. ALCHY as abbreviation means "Alcoholic". An abbreviated form of " alcohol " ; pronounced "al-key. Do you know a definition that should be on this site? Gillian thinks her husband's an alkie because he a. Popular Themes on Cyber Definitions. Last Added Submit About Mobile version. What does ALCHY mean?