Definition of rule
something regarded as a
normative example; "the convention of not
naming the
main character"; "violence is the
rule not the exception"; "his formula for impressing visitors"
the
duration of a monarch's or government's power; "during the
rule of Elizabeth"
directions that
define the way a
game or
sport is to be conducted; "he knew the rules of chess"
mark or
draw with a ruler; "rule the margins"
keep in check; "rule one's temper"