Dictionary

blue book

noun

: a report that is published by the government

: a thin booklet with a blue cover and empty pages that is often used for writing the answers to test questions in college

: a book that lists the current value of items (such as used cars)

Full Definition of BLUE BOOK

1
:  a register especially of socially prominent persons
2
:  a book of specialized information often published under government auspices
3
:  a blue-covered booklet used for writing examinations
4
:  a periodically issued price list (as of used cars)
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First Known Use of BLUE BOOK

1835

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