restaurant; dining establishment
A somewhat formal or literary term for a restaurant, especially one serving alcohol. Not the most common everyday word for 'restaurant' (which is レストラン or 飲食店).
He had dinner at an old restaurant on a corner of the town.
Compound of 酒 (sake, alcohol) and 楼 (tower, tall building), originally referring to a multi-story establishment serving alcohol. The exact historical derivation is uncertain.