rule book

noun

Definition of rule book

: a book that contains the official set of rules that must be followed in a game, job, etc. always carries the rule book in his back pocket to every game also : the rules in such a book The rule book says that once the puck fully crosses the line it is a goal. often used figuratively He's a maverick when it comes to decorating, throwing away the rule book.

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“Rule book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rule%20book. Accessed 15 Apr. 2021.

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