Definition & Meaning of "pro skirt"in English

What is the origin of the term "pro skirt" and how is it used?

"Pro skirt" is a slang term that likely emerged in English in the 20th century as a euphemistic or coded way to refer to a prostitute, combining "pro" (short for professional) with "skirt" (a dated slang term for a woman). The term emphasizes the transactional or occupational aspect of sex work. It is used in informal speech, criminal or journalistic contexts, and sometimes in subcultural slang to identify women engaged in prostitution. The term is derogatory and offensive, reflecting moral judgment and social stigma rather than neutral description.