A professional prostitute who is not paid per trick, but annually.
This is a term, or phrase, invented by the undersigned as a rejoinder to a poet who said (and many other writers agree) that "cellar door" is the most poetic phrase in English. I alleged, in response, that "salaried whore" would do just as well, and is a more stimulating term.
Millie was a salaried whore in Soho.