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rule (n):
measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths

rule (n):
something regarded as a normative example
Samples
the convention of not naming the main character.
violence is the rule not the exception.
his formula for impressing visitors

rule (n):
a principle or condition that customarily governs behavior
Samples
it was his rule to take a walk before breakfast.
short haircuts were the regulation

rule (n):
(mathematics) a standard procedure for solving a class of mathematical problems
Samples
he determined the upper bound with Descartes' rule of signs.
he gave us a general formula for attacking polynomials

rule (n):
a rule or law concerning a natural phenomenon or the function of a complex system
Samples
the principle of the conservation of mass.
the principle of jet propulsion.
the right-hand rule for inductive fields

rule (n):
a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct
Samples
their principles of composition characterized all their works

rule (n):
any one of a systematic body of regulations defining the way of life of members of a religious order
Samples
the rule of St. Dominic

rule (n):
prescribed guide for conduct or action

rule (n):
directions that define the way a game or sport is to be conducted
Samples
he knew the rules of chess

rule (n):
(linguistics) a rule describing (or prescribing) a linguistic practice

rule (n):
dominance or power through legal authority
Samples
France held undisputed dominion over vast areas of Africa.
the rule of Caesar

rule (n):
the duration of a monarch's or government's power
Samples
during the rule of Elizabeth

rule (v):
keep in check
Samples
rule one's temper

rule (v):
decide with authority
Samples
The King decreed that all firstborn males should be killed

rule (v):
decide on and make a declaration about
Samples
find someone guilty

rule (v):
mark or draw with a ruler
Samples
rule the margins

rule (v):
exercise authority over; as of nations
Samples
Who is governing the country now?

rule (v):
be larger in number, quantity, power, status or importance
Samples
Money reigns supreme here.
Hispanics predominate in this neighborhood

rule (v):
have an affinity with; of signs of the zodiac

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