ghost woman; an ocean nymph? The Nereides were depicted in ancient art as beautiful young maidens, sometimes running with small dolphins or fish in their hands, or else riding on the back of dolphins, hippokampoi (fish-tailed horses) and other sea creatures.
A sexually aggressive woman who's after a good lay in the sack! When there's good peen involved, man eaters never back down. She will chase your skivvies off the seams.
2.) A scandalous female, like that of a hussy or whore.