noun
large sake cup
A wide, shallow cup used for drinking sake in one gulp; often used in casual or festive settings.
居酒屋でぐい呑みに日本酒を注いでもらった。
At the izakaya, they poured sake into a large sake cup for me.
noun, noun or participle which takes 'suru', transitive verb
Refers to the action of drinking something in one go, especially alcohol. Often used as a noun or with する.
彼はビールをぐい飲みして、すぐに酔っ払った。
He gulped down the beer and got drunk right away.