1. A woman who enjoys eating men. see cannibalism 2. Someone who takes advantage of men. Their mantra is "Love 'em and leave 'em." Of course, they don't really love them. They sleep with them, or help them get some and then leave them lying in the cold.
She's such a maneater. - skank A man could also be a maneater.
He's such a maneater. - man-skank