What is the title for a gladiator trainer in ancient Rome?

The title for a gladiator trainer in ancient Rome is "lanista." A lanista was a person who owned and trained gladiators, often running a ludi, or gladiatorial school. They were responsible for preparing the gladiators for combat by teaching them different fighting techniques and ensuring they were in peak physical condition. This role was crucial in the training process, as it directly impacted the performance and success of the gladiators in the arena.

The other terms listed refer to different roles or concepts in the context of ancient Rome. "Doctores" is a term that can refer to trainers or instructors, but it is not specific to gladiators. "Gladiator" refers to the fighters themselves, and "ornatrix" is a term for a female hairdresser or maid, none of which pertain to the title of a gladiator trainer.