A beer barrel is a large container used to store and transport beer. The term can refer to several different types of containers, including a polka (5 letters), which is a wooden barrel with a capacity of around 50 liters; a TUN (3 letters), which is a large CASK with a capacity of around 200 liters; a KEG (3 letters), which is a metal container with a capacity of around 30 liters; a CASK (4 letters), which is a wooden barrel with a capacity of around 10 liters; a TAP (3 letters), which is a device used to dispense beer from a KEG; and a HOGSHEAD (8 letters), which is a large CASK with a capacity of around 250 liters. Additionally, the term can also refer to a FEDS (4 letters), which is a federal excise tax imposed on alcoholic beverages.