Bandish?

**I heard from different people that there is sometime bandish on some girls/boys so they would not get married. Is it like they would not get rishtas at all or would rishtas/proposals come, but will be rejceted. I have heard many desi aunties talk about it, but never got the point. What exactly is bandish and what is the effect (i mean rejecting rishtas or no rishta coming at all or what?) Is bandish like jaadu? Please explain to me **