I'm interested in the etymology of the word "barrel". Etymology Online says that it comes from the 12th century Old French word "baril", and notes that the word has cognates in all Romance languages. This, to me, implies one of two things. Either the barrel was invented in the 12th century in a region where Old French was spoken, and the the technology spread from there to all other Romance language-speaking cultures, or there is an older word, probably in Latin, from which all of the languages got their word for barrel. Since barrel technology existed at least the better part of a millennia before the Old French word came into being, I'm guessing the latter. Can you shed any light on it?