(a) Disobedience. (b) Stiffness of body.

Lack of suppleness (in limbs, muscles, etc.); the name of certain diseases causing rigor of muscles, esp. tetanus. Also figurative.

Pathology. A condition of persistent contraction and rigidity in the muscles or the joints.

Muscle spasm or rigidity; (in later use) spec. muscle rigidity occurring in resistance to, or as failure of relaxation after, passive movement, seen…

Persistent contracture or rigidity of one or more joints; spec. (more fully arthrogryposis multiplex congenita) any of a group of syndromes…