one of the two bones that your teeth are in:
a broken jaw
an animal with two rows of teeth in its lower jaw
2 [countable usually singular]
the lower part of your face. Its shape is sometimes thought to show your character:
He punched him on the jaw.
a rugged physique and a strong square jaw
She's got a very determined jaw.
used to say that someone looked surprised or shocked:
'You're not serious, are you?' Ellen's jaw dropped.
the mouth of a person or animal, especially a dangerous animal
the two parts of a machine or tool that move together to hold something tightly
a situation in which something unpleasant almost happens:
She had saved him from the jaws of death.