| 1. | a register or directory of socially prominent persons. |
| 2. | any register or directory, as of major companies or officials. |
| 3. | a blank book used in taking college examinations, usually with a blue cover. |
| 4. | a British parliamentary or other publication bound in a blue cover. |
| 5. | (initial capital letters ) Trademark. a reference manual listing the current market value of used cars by model and year of manufacture. |
| 6. | a similar manual listing the market value of other items, appliances, etc. |
| blue book also blue·book (blōō'bŏŏk') n.
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