It means MILF! Call a spade a spade, ladies. I don't know why this does my head in so much, but it really does!
Maybe it's for this reason: there's something contradictory about wanting to be fuckable, yet feeling the need to disguise it with hideous, twee euphemisms. It's a turn-off..I'm going to get a lynching for this, aren't I? "Why do you resent women for wanting to keep their figure after giving birth?" and all that. I'll be disappointed if I don't get a bollocking from someone for this, to be honest!