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To begin returning to some place. Let's start back now so we can get home before dinner. We started back before I had a chance to get any photos of the place.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
start back (to some place)
to begin the journey back to a place. When do we start back to Chicago? It's time to start back.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To begin a return journey: We had better start back soon or we won't get home before dark.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.