barrel barrel /ˈbɛrəl/

noun

1. () A tube through which a bullet travels when a gun is fired  ( gun barrel , barrel )
   a tube through which a bullet travels when a gun is fired
    The bullet sped through the barrel and hit the target.
   The bullet sped through the barrel and hit the target.
   
   
2. () A cylindrical container that holds liquids  ( cask , barrel )
   a cylindrical container that holds liquids
    The barrel was filled with fresh apple cider.
   The barrel was filled with fresh apple cider.
   
   
3. () A bulging cylindrical shape; hollow with flat ends  ( drum , barrel )
   a bulging cylindrical shape; hollow with flat ends
   
4. Any of various units of capacity  ( barrel , bbl )
   any of various units of capacity
    A barrel of beer is 31 gallons and a barrel of oil is 42 gallons
   a barrel of beer is 31 gallons and a barrel of oil is 42 gallons
   
   
5. The quantity that a barrel (of any size) will hold  ( barrel , barrelful )
   the quantity that a barrel (of any size) will hold
   

verb

1. Put in barrels  ( barrel )
   put in barrels