dominatrix

dominatrix, domina A dominating woman; a female dominator.The Concise Oxford English Dictionary Eleventh Edition
A dominant female in sadomasochistic practices.The Concise Oxford English Dictionary Eleventh Edition
2003, Lora Shaner, Madam: Inside a Nevada Brothel (page 296)

Shadowy masked dominatrixes in stiletto-heeled hip boots snap commands and whips with equal fury.

But even as movies depicting successful madams, freelance hookers, and dominatrices were celebrating prostitution as a marketplace expression of the new sexual freedom, doubts were emerging, a backlash growing.

I've always maintained that the dominatrix is as much a misogynistic caricature as the virginal, asexual "good" girl or the disgusting "nymphomaniac/slut." The so-called dominant woman is a dark, eerie version of the woman on a pedestal.