What is the meaning of Deadline?

A time limit in the form of a date on or before which something must be completed.

A guideline marked on a plate for a printing press.

A line that does not move. (Can we add an example for this sense?)

A boundary around a prison, prisoners crossing which would be shot.

To render an item non-mission-capable; to ground an aircraft, etc.

deadline

deadline

deadline (date on or before which something must be completed)

a deadline

Source: wiktionary.org