1. RETURN OF THE JEDI means RETURN OF ANAKIN SKYWALKER to the good side of the force.
2. It can also mean in less important B-movie style THE RETURN OF THE JEDI TO CINEMAS across the planet.
Very practical but not clearly understood title. Even in Germany some idiot translated it in plural for official release , like "RETURN OF JEDI - KNIGHTS" (Die Rückkehr der Jedi-Ritter)... probably to cinemas across the world...what a misconception...