A person, usually a woman, who's primary objective in a relationship is to have access to their partner's money.
People often look down on gold diggers and refer to them as selfish whores. But if you're dumb enough to let someone use you for your money, or dumb enough not to realize you're being used, then you only have yourself to blame. Usually the gold digger's partner just wants them for sex anyways. They are no better than the gold digger.
That gold digger sure knows how to get what she wants.