(computing) An instance of rebooting.

(by extension) A fresh start.

(narratology) The restarting of a series' storyline, discarding all previous continuity.

(widely considered a misuse) The restarting of a series' storyline without discarding previous continuity.

(computing, transitive, intransitive) To execute a computer's boot process, effectively resetting the computer and causing the operating system to reload, possibly after a system failure.

(by extension) To start afresh.

Restart; to return to an initial configuration or state.