Definition of "cross the line" in English

Verb

1. To overstep a boundary, rule, or limit; to go too far or do something unacceptable.

   • I can tolerate a lot, but they really crossed the line when they broke the equipment.

2. To finish a race.

3. To achieve completion of something.

4. To cross the equator, as a vessel at sea.

5. To film from the opposite side of an imaginary axis on set in order to view the actors from the opposite direction.