The baby had caught at the Constable's thumb, although he could not close his fingers around it.

He looked closely at his thumb but saw no indication of damage.

He was looking at his thumb as if studying a hangnail.

Then he looked back at his thumb and popped it out like a guy trying to hitch a ride.

She stared down at the tanker's left hand and his thumb on the switch.

While he talked he had been looking at his thumb.

"You might put it that way," the Chief said, looking at his left thumb.

It was true, the doctor thought, looking down at his thumb.

But it was either that or... he looked at his thumb again.

She took away the handkerchief and looked at her thumb.