flagellist
/ˈflædʒəlɪst/Definitions
1. noun
A person, especially a professional, who performs whips or flagellation on the back or buttocks as a form of erotic stimulation or in a S and M (sadomasochistic) context.
“The flagellist was well-known for his strict discipline and precision in his performances.”
2. noun
A person who uses a whip or flagellum (whip-like structure) as an instrument in various contexts such as scientific experiments, or as part of a ceremonial or ritualistic practice.
“The marine biologist was an expert flagellist, studying the movement and behavior of flagellated cells in various aquatic environments.”