turn back
1.
Reverse one's direction, as in We had to turn back earlier than expected. [First half of 1500s]
2.
Drive someone back or away, as in They turned back anyone who didn't have an invitation, or Our forces soon turned back the enemy. [First half of 1500s]
3.
Fold down, as in Turn back the page you're on to keep your place in the magazine. [Second half of 1800s] Also see
turn one's back on.



