Crossword Genius

Cricket matches controlled by entitled son’s rule? (9)

Ross

I believe the answer is:

principle

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'rule?' is the definition.
(principle is a kind of rule)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for principle that I've seen before include "Morally correct behaviour" , "Set of rules" , "honour" , "Rule of personal conduct" , "Precept, rule" .)

I've seen this clue in The Hindu.
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