Dreaming of a black widow signifies fear and hostility in relationships. You fear being overpowered and devoured by your mate. To overcome these inadequacies, develop your own strengths in some areas of the relationship to balance the struggles where one person cannot have the upper hand in every situation.
Black widow in dreams signifies hidden, underlying fears that come to the surface when we are unable to deal with them. It is also a symbol of betrayal. Its appearance in a dream symbolizes jealousy, anger and revenge.