Where the smile lines would be in a human being.

Sam had a broad face, with smile lines around a wide, soft chin.

Peering back, she saw tiny smile lines around his eyes.

Her thin brown face was seamed with a lot of smile lines.

It went with all the smile lines in her face.

She was matronly, with smile lines around mouth and eyes.

They were incandescent green and had smile lines in the corners.

Vaughn smiled again, and the smile lines showed that it was something he must have done a great deal of over the years.

My skin is smooth with only a couple of "smile lines".

Deep smile lines put her on the far side of forty, but she wasn't smiling now.