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

Recent Examples on the Web

While some saw it as cheating, the bat was proved legal under MLB’s rule book. —Scott Thompson, FOXNews.com, 3 Apr. 2025

Religious leaders specified days on which, for medical or liturgical reasons, married couples were not to copulate—one Irish rule book from the early seventh century excluded a good two-thirds of the year. —S. C. Cornell, The New Yorker, 12 Mar. 2025

The book is later discovered to be Quinn's copy of The Founder's rule book, The Pact, that was kept by Judge Meadow after trading with the family for it. —Jeff Spry, Space.com, 4 Jan. 2025

Here’s a rule book [throws up his arm] — out the window. —Kalia Richardson, Rolling Stone, 24 Mar. 2025

Rhymes for rule book

• kinderhook
• meadowbrook
• overlook
• overtook
• pocketbook
• storybook
• tillamook
• undertook
• betook
• casebook
• chapbook
• checkbook