I'll echo the dame and doll. This site has a bunch of slang terms of the 1920s, when those gangsters were big. I always remember moll as being a gangster's girlfriend.

"You need me. You wouldn't be much of a hero without a villain. And you do love being the hero, don't you. The cheering children, the swooning women, you love it so much, it's made you my most reliable accomplice." -- Lex Luthor to Superman, Question Authority, Justice League Unlimited