1. Of a path or route, to continue to one's point of origin. I think this trail will lead back to our campsite. There are a few roads leading back to New Jersey, but this one is definitely the fastest.
2. To guide or direct someone or something to some point of origin. In this usage, a noun or pronoun is used between "lead" and "back." We've set up markers along these rocks to help lead hikers back to the proper trail. The dense network of nerves lead the signal back to the brain at incredible speeds.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
lead someone or something back (to someone or something)
to guide someone or something back to someone or something. Someone will have to lead me back to camp. I just know I'll get lost if I go by myself. The park ranger led back the hikers to their tent. I will lead them back.
lead back (to some place)
[for a pathway] to return to a place. This path leads back to the camp. I hope it leads back. It seems to be going the wrong way.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.