The term 'ACTOR'S ROLE' can be broken down into two parts: the actor and their role. An actor is someone who performs in a play, movie, television show, or other form of media. Their role is the character they are playing in the production. Actors must be able to interpret the script and bring the character to life. They must also be able to work with other actors and the director to create a believable performance. The four-letter solution for this term is 'PART, ' which refers to the PART an actor plays in a production.