1. A person who drinks alcohol to excess habitually
   "The alco was a regular at the local bar";
   - alcoholic, alky [informal], dipsomaniac, boozer [informal], lush [N. Amer, informal], soaker [informal], souse [informal], rumpot [N. Amer, informal], tosspot [informal], dipso [informal], winebibber [archaic], alkie [informal], drunkard, drunk, rummy, sot, inebriate, wino [informal]

Derived forms: alcos

Type of: drinker, imbiber [informal], juicer [N. Amer, informal], soak [informal], sponge [informal], toper [literary]

Encyclopedia: Alco, Texas