Fiona didn't bother to try to make out the hair-thin line the doctor pointed out on the X-ray.

If they squinted really hard, they could just make out hair-thin lines cutting across the distant planets.

Morris leaned a little closer and saw a bright, hair-thin line that snaked across the photo and ended in a small, crescent-shaped smear of equal brightness.

I was about to give up when I spotted a hair-thin line at the wrist end.

The wizard contemplated him, hair-thin lines of impatience and power deepening at the sides of his mouth.

Beneath the tip of my index finger, I could feel the hair-thin line of his ancient scar, buried deep beneath the ruddy waves.

A hair-thin line ran around its rim, but there was no visible means of opening it.

The hair-thin line of light widened to a narrow ribbon which described an eight thousand mile half-circle.

Holding her cigarette lighter's flame close to it, she could see hair-thin lines describing a square in the rock face.

She opened her free hand; sure enough, a hair-thin red line ran across the heel of it.