rule book

noun

: 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.

Examples of rule book in a Sentence

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But the connection between the two women was even purer than that, rooted in a real ride-or-die friendship that was forged long ago by two Hollywood transplants who loved metal music and wanted to change the rule book on women’s role in it. — Selena Fragassi, SPIN, 6 Oct. 2026 Under its competition rule book, the bloc has also started an investigation into AI services, including whether Google breached EU competition rules in its use of AI overviews. — Barbara Moens, ArsTechnica, 31 Aug. 2026 Whereas architects believe there can be a single rule book for everyone, artisans accept that multiple sets of guidelines will coexist. — Mark Leonard, Foreign Affairs, 18 Aug. 2026 Purists don’t care for the interruption in the game’s natural flow, but resistance remains futile as long as FIFA is in charge of ⌘+F’ing its way through the rule book. — Anthony Crupi, Sportico.com, 17 July 2026 See All Example Sentences for rule book

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Cite this Entry

“Rule book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rule%20book. Accessed 7 Oct. 2026.

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