If the barrel in your dream was upright, full and/or in good condition, it forecasts financial security. But if it was empty and/or rolling, it suggests you should take measures to protect your position.... My Dream Interpretation
Vision: Opening a barrel: an influential person becomes your friend. Seeing a full barrel: a hint of prosperity to come. Looking at an empty barrel: you are dissatisfied with your life. Rolling several barrels into your basement: a good sign, meaning increased wealth and a secure future. Buying a barrel of wine: good friends are guests in your house.
A barrel with the bottom missing: your efforts are futile.
Depth Psychology: The barrel—like the Bucket—can be seen as the “Vessel of your Life.’* It often has sexual meaning, but may also warn of physical illness.... Dreamers Dictionary