blue book
Americannoun
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a register or directory of socially prominent persons.
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any register or directory, as of major companies or officials.
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a blank book used in taking college examinations, usually with a blue cover.
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a British parliamentary or other publication bound in a blue cover.
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(initial capital letters) a reference manual listing the current market value of used cars by model and year of manufacture.
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a similar manual listing the market value of other items, appliances, etc.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He needed shoes, Vazquez said quietly, reading off of her small blue book, where all of the families’ information is noted.
From Los Angeles Times • Dec. 25, 2025
Our little blue book now ranks a miserable 12th, right down there with Malaysia, according to a new report by Henley & Partners, a company that advises people on moving abroad.
From MarketWatch • Oct. 18, 2025
Libby Jones, General Manager for Overseas Health and Safety at TUI, explained the company audits the compliance of hotels against safety standards in what's known as the "blue book".
From BBC • Oct. 14, 2025
Ronan Takizawa, a sophomore at Colorado College, has never heard of a blue book.
From Seattle Times • Aug. 9, 2023
I barely had time to wonder what a blue book was before everyone produced one from their bags.
From "Educated" by Tara Westover
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
