Dreams dictionary: Spill
Dreams dictionary: Interpretation 1
To dream that you spill something represents your carelessness and inconsideration of someone's feelings. You are not paying enough attention to those around you and as a result are offending and upsetting them. Alternatively, the dream may be a metaphor for something that you are dying to say, as in "spill it.
Dreams dictionary: Interpretation 2
To dream that you spill some food indicates that you need to eliminate that food from your diet.
Dreams dictionary: Interpretation 3
To dream that you spill a drink at a party symbolizes your social ineptness and awkwardness in a social situation.