What is the meaning of Step_back?

Used other than figuratively or idiomatically: see step, back.

To stop what one is doing and evaluate the current situation.

To prevent oneself from becoming emotionally involved in a certain situation.

to depart driving the train following the train they arrived into the station driving, so as to decrease service turnaround time.

A setback, downgrade, or deterioration.

A reversion to a former state or situation.

Source: wiktionary.org