The expression probably comes from the physical act of turning your back toward someone, instead of speaking to him face-to-face.

VOA: special.2009.12.13

Paul began to feel hungry so he asked the taxi driver to take him back to the hotel.

VOA: special.2009.04.11

He has brought needed supplies with him. "Wooo.It's about time you got back to earning an honest living.

VOA: special.2009.03.22

They start to fall in love. But after he recovers, the girlfriend who left him when he got hurt tries to win him back.

VOA: special.2010.06.14

A man named Fred Dewey wrote to friends back home that it took him two weeks just to move his supplies from Skagway to the mountain.

VOA: special.2009.02.11

The American people voted for Coolidge partly to thank him for bringing back honesty and trust to the White House following the crimes of the Harding administration.

VOA: special.2011.01.27

Now he could get back to the urgent problems that faced him.

VOA: special.2009.12.17

An order came for him to fall back and support our right.

VOA: special.2010.03.27

He was looking for Paul to bring him back to Pittsburgh.

VOA: special.2009.04.11

The orchestra's rehearsals bring him back to his hometown every weekend.

VOA: special.2010.06.21

He gave Smiley a look that said he was sorry for fighting a dog that did not have any back legs for him to hold, which he needed to win a fight.

VOA: special.2009.08.29

And they will do everything they can, everything possible to make him stay in jail and not go back to Panama."

VOA: standard.2010.07.07

The president invited about and challenged them to help him find ways to put millions of Americans back to work.

VOA: standard.2009.12.04

Stogel took his car back to the dealer, but he says the service manager was unable to give him answers.

VOA: standard.2010.03.04

"As far as cultural sensitivities, we brought him back to the vehicle, not to disrespect him or his family.

VOA: standard.2010.04.06

He always believed that if he made his audiences happy, they would keep coming back to see him.

VOA: standard.2009.08.14

His newest tree ring samples, from southern Vietnam, enabled him to take the climate record back much further.

VOA: standard.2010.04.05