Lengua inglesa
1 a principle, regulation, order or direction which governs or controls some action, function, form, use, etc.
2 a government or control;
b the period during which government or control is exercised.
3 a general principle, standard, guideline or custom make it a rule always to be punctual .
4 Christianity the laws and customs which form the basis of a monastic or religious order the Benedictine rule .
5 a ruler (sense 2).
6 printing a thin straight line or dash.
verb (ruled , ruling )
1 tr & intr to govern; to exercise authority over someone.
2 to keep control of or restrain someone or something.
3 to make an authoritative and usually official or judicial decision.
4 intr to be common or prevalent chaos ruled after the war .
5 to draw a straight line.
6 to draw a straight line or a series of parallel lines eg on paper.
[13c: from French, from Latin regula a straight stick, related to regere to rule, and rex king]
ruleless adjective .
as a rule usually.
be ruled to take advice.
rule the roost to be dominant.
rule something out
1 to leave it out or not consider it.
2 to make it no longer possible; to preclude it.

© Hodder Education
rule of three
noun , maths a method of finding the fourth term of a proportion when three are given.

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rule of thumb
noun a method of doing something, based on practical experience rather than theory or calculation.

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1 someone, eg a sovereign, who rules or governs.
2 a strip of wood, metal or plastic with straight edges that is marked off in units, and used for drawing straight lines and measuring.

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