1. The main or principal actor who plays the leading role in a film, television show, or theatrical production
The lead actor delivered an outstanding performance in the final scene.
O ator protagonista entregou uma performance excepcional na cena final.
2. The actor upon whom the narrative primarily focuses
She has been the lead actor in most of the director's films.
Ela tem sido a atriz protagonista na maioria dos filmes do diretor.