to behave badly or break the rules; to leave a queue or a line of people
Oxford67% of films
to behave badly or break the rules
We'll do it too the moment you step out of line.
As for you, Valiant, step out of line, and we'll hang you and your laundry out to dry.
Editorial33% of films
to leave a queue or a line of people
Can you step out of line, please?
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition