How is “turn back” used?

In The Day After Tomorrow (2004), one line is: “We've only made it to Brooklyn. Maybe we should just turn back.”

Which movie is “turn back” from?

The clip at the top of this page is from The Day After Tomorrow (2004).

to return the way you have come; to make sb / sth do this; to change back into a previous form or state; to reverse time so that the past is undone

Oxford70% of films
to return the way you have come; to make sb / sth do this
We've only made it to Brooklyn. Maybe we should just turn back.
We should turn back.
Editorial10% of films
to change back into a previous form or state
Editorial10% of films
to reverse time so that the past is undone

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

We've only made it to Brooklyn. Maybe we should just turn back.

Said in 8 films · #1