The skull has a top jaw, and a bottom jaw, with teeth in them.

Something about moving their bottom jaw or summat innit?

Vulpe's bottom jaw, and those of his friends, fell open.

He was sitting upright, stiff and pale, with his bottom jaw hanging slightly open.

The bottom jaw was missing and some of the teeth from the top, but the sockets were there.

He lisped, because he was missing his bottom jaw, which had been replaced by someone else's.

Male weren have large tusks protruding from the bottom jaw.

Three barbels, one on the bottom jaw and two on the snout, provide the fish with its common name.

She looked dreadful, with the bottom jaw fallen back.

On mature specimens, the bottom jaw may protrude very slightly.