The term "original cast" refers to a group of actors who were part of the original production or performance of a play, movie, musical, or other work of entertainment. This means that these individuals were involved in creating and bringing the piece to life for the first time, often through their roles, singing, dancing, or acting abilities. The "original cast" is typically recognized as the group who set the standard for how a particular character should be portrayed or performed, and their interpretations are often used as a benchmark when casting subsequent productions of the same work.