1. The main or most important functions, responsibilities, or parts that someone or something has
The primary roles of a manager include planning and supervising staff.
Os papéis principais de um gerente incluem planejamento e supervisão de pessoal.
2. In theater or cinema, the leading or starring parts in a production
She was offered one of the primary roles in the new film.
Ela foi oferecida um dos papéis principais no novo filme.