(US) Inexpensive table wine, typically bottled in a glass jug.

plural of jug wine

A pottery figure of a seated man wearing a tricorn hat and holding a mug of beer

A bellarmine.

A narrow-necked fancy jug for holding claret.

plural of jug-heavy

(US, slang) A safecracker.

(idiomatic, intransitive, informal) To cease drinking alcohol; to become teetotal.

A low-growing plant native to the eastern US with inconspicuous green or brown flowers shaped like tiny jugs, Hexastylis arifolia

Even though you can use something, it may contain flaws that will lead it to ultimately fail.