What is the meaning of Rerun?

An act or instance of rerunning; a repetition.

A television program shown after its initial presentation, particularly many weeks after its initial presentation; a repeat.

Another printing run (impression; batch of copies of a given edition) of a book, cartoon, etc.

A political candidate who holds the same political agenda or doctrine as a past or incumbent holder of a given political office.

A second or subsequent run of a computer program.

To run again; to repeat.

To broadcast (a television program etc.) again.

To be broadcast again.

To run (a race or other contest) again.

To run (a computer program) again.

Source: wiktionary.org