There are two meanings for bonds in dreams. One is as in savings bonds (promissory notes) and the second as in bindings and cords.
Spiritually, the significance is that of an undertaking, the changing of conflict into law and order, of chaos into cosmic order. Evil can traditionally be contained by binding it, whether by magical technique, symbolism or visualization. Depending on whether the dreamer is being bound or doing the binding, it shows submission to a greater force.