To end something.
To announce the closing of a pub for the day.
To call a timeout.
To indicate that an activity, especially the taking of a test, is complete.
The expected time of arrival for participants in a performance event, e.g., a play or concert.
To put an end to.
To eliminate, or make extinct.
To take a character out of a television series or other work by purposefully and deliberately having them killed within the plot.