Turn Back Meaning

(obsolete, transitive) To give back; to return.

Example:   Realising he had forgotten his briefcase, he turned back to the office.‎
1914, Louis Joseph Vance, Nobody, chapter III:
  Turning back, then, toward the basement staircase, she began to grope her way through blinding darkness, but had taken only a few uncertain steps when, of a sudden, she stopped short and for a little stood like a stricken thing, quite motionless save that she quaked to her very marrow in the grasp of a great and enervating fear.
To return to a previous state of being.
  He stopped drinking for a couple of years, but now he has turned back to his old ways.‎
  Once we take this decision, there's no turning back.‎
  The soldiers turned back all the refugees at the frontier.‎
  In Autumn we normally turn the clocks back one hour.‎
  I love that song: turn back to it!‎
  When you make the bed, please always turn the sheet back over the blanket.‎
William Shakespeare (1564-1616)
  We turn not back the silks upon the merchants, / When we have soiled them.