barrel

noun

1
a cylindrical container that holds liquids
2
a tube through which a bullet travels when a gun is fired
3
any of various units of capacity
a barrel of beer is 31 gallons and a barrel of oil is 42 gallons
4
the quantity that a barrel (of any size) will hold
5
a bulging cylindrical shape; hollow with flat ends

Also useful for “barrel”:Unscrambler— Rearrange the letters in “barrel”