They exchanged a look, then both looked back at me.

The other two exchanged a look of age and experience above his head.

I tried to exchange a look with him, but he stared through me.

The women exchanged looks, this time to see if one of them knew.

They exchanged looks and she went back to her seat.

A few of the other patients exchanged looks, but most watched the movie.

In a movie, say, when a son wants to tell his father he loves him, but doesn't, and instead they exchange a look.

He exchanged a look with his wife, who simply nodded.

We exchanged a look which said a great deal more than many long conversations do.

He glanced at his wife, and the two of them exchanged a look David couldn't read.