Emasculation
Emasculation is the removal of the genitalia of a male, notably the penis and/or the testicles, either by surgery, violence, or by accident (see castration). By extension, it also means to render less of a man, or to make a male feel less of a man by subjecting him to humiliation.
Emasculation has been done by vengeful spouses who felt betrayed by their husbands.