I could not see what was behind him - just a blank wall.

At times it had the effect of a blank wall.

Her eyes turned away from me but not to the window, to look at a blank wall.

Art looked back at the new door in what had been a blank wall.

Before him and about two feet away was the blank wall of another building.

"That line of research seemed to lead me up against a blank wall."

He sat in a chair, a blank white wall behind him.

The future is not a blank wall to line up against, but a way to be walked.

My husband and I could have been a blank wall.

But then they found themselves up against a blank wall.