noun. A woman belonging to the demimonde.

noun. A member of the demi-monde.

noun. A sexually promiscuous woman (of the demimonde)

noun. a woman whose sexual promiscuity places her outside respectable society

"Valérie Larbin was what the chroniclers of society—or their putative sons, the social novelists—would have called a demimondaine."

Cyprian  bawd  cocotte  fancy woman  harlot