off-Broadway adjective 1noun 1forms 1 adjective1 •Of or pertaining to an off-Broadway theater, or a production mounted in one.Little Shop of Horrors is probably the most famous of the off-Broadway productions. noun1 •In the New York City area, a small theater with fewer than 300 seats, or a production in such a theater, usually away from the Broadway theater district, which operates under special rules from the theatrical unions and permits mounting productions at a much lower cost. formsoff-Broadways