vb (tr) informalUS to consume (a drink) in one gulp
chug-a-lug
(ˈtʃʌg əˌlʌg)
v. -lugged, -lug•ging,Slang.v.t. 1. to drink (a container of beverage) in one continuous draught. v.i. 2. to drink a beverage in one continuous draught. [1955–60, Amer.; imitative]