back ‧ track /ˈbæktræk/ BrE AmE verb [intransitive]
1 . to change an opinion or promise that you gave so that it is not as strong as it was earlier ⇨ backpedal
backtrack on
The President is backtracking on his promise to increase health care spending.
2 . to return by the same way that you came:
We had to backtrack about a mile.