Pro-Domme refers to a professional dominant, which is a person who takes part in BDSM or kinky activities as their profession. This involves providing domination and submission experiences for their clients, often in the context of sadomasochistic role play. In these sessions, the pro-domme assumes the dominant role while the client plays the submissive role. The term is a combination of "professional" and "dominatrix" (a female dominant).