大おお酒ざけ

noun

large amount of alcohol; heavy drinking

Refers to drinking a large quantity of alcohol in one sitting or habitually. Often used in phrases like 大酒を飲む.

• 彼かれは毎まい晩ばん大おお酒ざけを飲のんでいる。

  He drinks heavily every night.

noun

heavy drinker

Can refer to a person who habitually drinks a lot. Often used with ～だ or ～である.

• あの人ひとは大おお酒ざけだから、一いっ緒しょに飲のむと大たい変へんだ。

  That person is a heavy drinker, so it's tough to drink with them.