Definition of "Jaw" :

noun: holding device consisting of one or both of the opposing parts of a tool that close to hold an object

noun: the part of the skull of a vertebrate that frames the mouth and holds the teeth

noun: the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth

verb: censure severely or angrily

verb: talk incessantly and tiresomely

verb: talk socially without exchanging too much information

verb: chew (food); to bite and grind with the teeth

"He jawed his bubble gum."