A female who Primarily offers BDSM services for a fee, but *not necessarily* sex.
Not to be confused with a 'Dominatrix' who Primarily offers sexual services, but with a BDSM component.
A Pro-Domme will generally be more serious about the BDSM lifestyle where as a Dominatrix will generally be a prostitute who has found a niche market
Domme is the female version of 'Dom', which itself is simply a shortened version of 'Dominant
The Countess is a Pro-Domme who runs a Club in the East End.