v. t. 1. To broadcast again, as of a film; as, they reran the episode for the tenth time.
Syn. -- rebroadcast. [ WordNet 1.5 ]

2. To perform again, as an experiment; as, they reran the test to confirm the surprising result. [ PJC ]

n. A repeated broadcast, such as of a film or episode of a television series; as, the seventh rerun had a surprisingly large audience.
Syn. -- rebroadcast. [ PJC ]