Noun
box wine (countable and uncountable, plural box wines)
"Bag-in-box" packaging is used for box wine, as well as other drinks
(packaging) A type of wine that is sealed in a plastic bladder and packaged in a cardboard box; cask wine.
Synonyms: cask wine, (Australia, informal) goon, (Australia, slang, humorous) Chateau Cardboard
Box wine can stay acceptably fresh for up to a month after opening because the bladder collapses as wine is dispensed, limiting contact with air and, thus, slowing the rate of oxidation. Source: Internet