The term 'PART OF A THEATER' can be broken down into four crossword solutions: PIT (3 letters), ROLE (4 letters), TIER (4 letters), and STAGE (5 letters). The PIT is the area in front of the STAGE, usually filled with seating, where the audience sits. The ROLE is the part that an actor or actress plays in a production. The TIER is a row of seats in a theater, typically arranged in a stepped pattern. Finally, the STAGE is the platform on which the actors perform. All of these components are essential parts of a theater.