rule with a rod of iron

:  a prescribed guide for conduct or action

:  the laws or regulations prescribed by the founder of a religious order for observance by its members

:  an accepted procedure, custom, or habit

:  to exert control, direction, or influence on

:  to exercise control over especially by curbing or restraining

:  to exercise authority or power over often harshly or arbitrarily

:  a straight slender stick growing on or cut from a tree or bush

:  osier

:  a stick or bundle of twigs used to punish

:  something made of iron: such as

:  shackles for the hands or legs

:  a heated metal implement used for branding or cauterizing

:  of, relating to, or made of iron

:  resembling iron

:  strong and healthy :  robust

:  to furnish or cover with iron

:  to shackle with irons

:  to smooth with or as if with a heated iron