To double back is to turn round and go the way you came. Double back to the bridge, we had to double back.
It is what you do on realising you have gone too far. Animals double back to break a scent trail, which is where the phrase comes from.
1phrasedouble backTo turn round and go the way you came.
“They had to double back nearly two miles for the turning.”
double back is a phrase.
Practised in Directions & Position