noun
plural rules
[count] a statement that tells you what is or is not allowed in a particular game, situation, etc.
synonyms seelaw</SYNR
a statement that tells you what is allowed or what will happen within a particular system (such as a language or science)
[count] :a piece of advice about the best way to do something
[singular] :the way something usually is done or happens
[noncount] :the control and power that a particular person, group, or government has over a country or area
[count] old-fashioned :a stick used for measuring things :ruler - see also slide rule
by the rules
in the way that is most common, expected, and acceptable
rule of law
a situation in which the laws of a country are obeyed by everyone
rule of thumb
a method of doing something that is based on experience and common sense rather than exact calculation
a principle that is believed and followed and that is based on the way something usually happens or is done
verb
rules; ruled; ruling
to have control and power over a country, area, group, etc. [no obj]
[+ obj] :to have great influence over (someone)
to make a legal decision about something [no obj]
not used in progressive tenses [no obj] slang :to be very good or popular - used to express strong admiration for someone or something
divide and rule
rule out
[phrasal verb]
rule (someone or something) out or rule out (someone or something) :to no longer consider (someone or something) as a possibility after careful thought or study
rule (something) out or rule out (something) :to make (something) impossible :to prevent (something) from happening
rule (someone) out :to remove (someone) from a competition, contest, etc.
rule the roost
rule with an iron fist/hand
chiefly US or Brit rule with a rod of iron
to rule a country, area, group, etc., in a very strict and often cruel way