The term 'stage part' can refer to two different crossword solutions: APRON (5 letters) and ROLE (4 letters). An APRON is a garment worn over the front of the body, usually to protect clothing from spills or dirt. It is commonly used in theater productions, as it helps to create the illusion of a particular time period or setting. A ROLE is a character or part that an actor plays in a production. It is important for actors to understand their roles in order to effectively portray their characters.