The dream interpretation of this symbol can be either one of two meanings. The first is, “Waste not, want not”. It calls to mind that it is better to be thrifty and take care of precious resources. For we never know when we need an item very badly. The second meaning is, you have so much of that resource that you can afford to spill it.
Have you dreamed about spilling milk or wine? Did you follow up on your dream? What was the outcome of your personal interpretation?