The backing of a carpet.
It's a volunteer organization that works with backing from the city and a few grants.
The cardboard backing gives the notebook a little extra stiffness.
I'm not backing out.
"I was backing you up," he said indignantly.
Two blocks away, the patrol car struck a van backing out from its diagonal parking space in front of the toy store.
You're not backing out, are you?
Backing out of that file, she went into another.