The term 252 Wine Gallons can be broken down into two crossword solutions: TUN (3 letters) and BARREL (6 letters). A TUN is a large cask or BARREL used for storing wine, beer, or other liquids. It is typically made of wood and holds 252 gallons of liquid. A BARREL is also a large cask or container used for storing liquids, but it is usually made of metal and holds 55 gallons of liquid. Therefore, 252 Wine Gallons would require five barrels or one TUN.