徳とく用よう瓶びんMeanings1nouneconomy bottle; large-size bottleRefers to a bottle sold in a larger, more economical size, often used for condiments or beverages.スーパーで醤しょう油ゆの徳とく用よう瓶びんを買かった。I bought an economy-size bottle of soy sauce at the supermarket.