Verses with the word jawbone in the Old Testament (3 verses):

Judges 15:15
And he found a new jawbone of an ass, and put forth his hand, and took it, and slew a thousand men therewith.

Judges 15:16
And Samson said, With the jawbone of an ass, heaps upon heaps, with the jaw of an ass have I slain a thousand men.

Judges 15:17
And it came to pass, when he had made an end of speaking, that he cast away the jawbone out of his hand, and called that place Ramathlehi.