TMJ Syndrome: temporomandibular joint
pain in jaw: a painful condition involving the temporomandibular joint and the muscles used for chewing, sometimes causing clicking sounds and restricted jaw movement. It is usually associated with a faulty dental bite.
jaw joint: either of the joints connecting the lower part of the jaw mandible with the temporal bone on each side of the head. Both joints act together when the jaw is moved.
Jill: I have TMJ and when I open my mouth really wide, it hurts like a mother.
Alex: Ewww... Lemme see!