Tun
vat
ice
The word is "vat." It is a large container used for holding liquids.
vat
"Vat" is not a long word; it is a short word with only three letters.
cravat
Vathy, Vathi
The large vat was used to brew beer.
Vat, Via, Von, Viv, Vin,
vex vie van vow vat vet and so on ...
Vat is a word. Vat means containor or box. If you need more information you can look it up on google.
A double metaphor. To be on the wagon means that you have given up drinking alcohol. A vat of alcoholism suggests a lot of alcoholism (a vat is large) and at the same time the word vat is usually applied to large containers of alcoholic drinks. To sum up it means going from one extreme of not drinking at all to the other extreme of heavy drinking.