Real Dictionary

jawbone
countable noun: A jawbone is the bone in the lower jaw of a person or animal.

jawbone in American English
a bone of a jaw, esp. of the lower jaw
to attempt to influence or pressure by persuasion rather than by the exertion of force or one's authority, as in urging voluntary compliance with economic guidelines
to attempt to persuade by using one's high office or position to apply pressure, as the President might in proposing price and wage controls to business and labor
adjective: obtained by or resorting to such a practice
noun: a bone of either jaw; a maxilla or mandible

jawbone in British English
noun