WordReference Random House Learner's Dictionary of American English © 2014
rule /rul/USA pronunciation  n., v.,  ruled, rul•ing.

  1. [countable] a principle guiding how one behaves, the way things are done, etc.:a rule in hockey saying to eject anyone fighting.
  2. [countable] the customary occurrence, practice, etc.; the normal way something is done:Her being late is the rule rather than the exception.
  3. [uncountable] government;
    amount of time ruling:in the days of foreign rule.
  4. [countable] the code of regulations observed by a religious congregation.
  5. ruler (def. 2).ruler

  1. to use power, authority, or influence over: [+ object]to rule a kingdom.[no object]to rule for only a decade.
  2. to decide in a court of law or by some authority; decree: [no object]How will the court rule?[+ on + object]The court will rule on the matter at its next session.[+ (that) clause]The court ruled that she could not keep her baby.
  3. [+ object] to mark with lines, esp. parallel straight lines, with the aid of a ruler:to rule paper.
  4. [+ object] to be superior in (a group), so as to hold influence over.
  5. [+ object] to influence or control:sometimes ruled by passion and not by logic.
  6. rule out, to eliminate from thinking about; to decide to ignore: [+ out + object]We can rule out the possibility of an overnight improvement in the economy.[+ object + out]We can't rule it out completely.
  1. as a rule, generally; usually:He's there by 7:30 as a rule.

Collins Concise English Dictionary © HarperCollins Publishers::

rule /ruːl/ n
  1. an authoritative regulation or direction concerning method or procedure, as for a court of law, legislative body, game, or other human institution or activity: judges' rules, play according to the rules
  2. the exercise of governmental authority or control: the rule of Caesar
  3. the period of time in which a monarch or government has power: his rule lasted 100 days
  4. a customary form or procedure; regular course of action: he made a morning swim his rule
  5. the rulethe common order of things; normal condition: violence was the rule rather than the exception
  6. a prescribed method or procedure for solving a mathematical problem, or one constituting part of a computer program, usually expressed in an appropriate formalism
  7. any of various devices with a straight edge for guiding or measuring; ruler: a carpenter's rule
  8. a printed or drawn character in the form of a long thin line
  9. another name for dash1: en rule, em rule
  10. a strip of brass or other metal used to print such a line
  11. a systematic body of prescriptions defining the way of life to be followed by members of a religious order
  12. an order by a court or judge
  13. as a rulenormally or ordinarily
  1. to exercise governing or controlling authority over (a people, political unit, individual, etc)
  2. (when tr, often takes a clause as object) to decide authoritatively; decree: the chairman ruled against the proposal
  3. (transitive) to mark with straight parallel lines or make one straight line, as with a ruler
  4. (transitive) to restrain or control
  5. (intransitive) to be customary or prevalent: chaos rules in this school
  6. (intransitive) to be pre-eminent or superior: football rules in the field of sport
  7. rule the roost, rule the roastto be pre-eminent; be in charge
Etymology: 13th Century: from Old French riule, from Latin rēgula a straight edge; see regulate

ˈrulable adj

'rule' also found in these entries:
In the English description:

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