English definition of “rule”
INSTRUCTION [C] › an official instruction about what you must or must not do: to break (= not obey) the rules. to obey/follow the rules You can't smoke at school, it's against the rules (= not allowed).
LEADER [U] › when someone is in control of a country: military rule There have been reports of immense human suffering under his rule.
USUAL WAY [no plural] › the usual way something is: an exception to the rule Workers in the North are, as a rule, paid less than those in the South.
PRINCIPLE [C] › a principle of a system, such as a language or science: the rules of grammar → See also ground rules