The jaw muscles were particularly well developed around the bill.

He stared down at the floor, his jaw muscles working.

Probably not more than half a dozen of them heard my jaw muscles pop.

The jaw muscles stopped marching across his face and he was going to wait the man out.

Her jaw muscles tightened, and he again thought she was going to pass out.

The boy's jaw muscles danced again, and he took a deep breath.

The boy's jaw muscles danced as he bit down on his anger.

The jaw muscles were far stronger than William had expected, and it was everything he could do to keep them apart.

The security chief remained silent at first, jaw muscles working, but finally nodded.

His jaw muscle bunched as he looked past me for support.