Blue Book—
1. a government publication providing information on some topic:
- The U.S. Department of State issued a heavily documented 40,000-word Blue Book.
2. a directory of persons of prominence, etc.:
- The Blue Book of British Broadcasting is a standard reference book of TV and radio stations.
3. a list of rules or requirements:
- When the document is sent to the Panel a charge is payable according to the scales set out in the Blue Book.
Project Blue Book—the dossier that the U.S. Air Force maintains on unidentified flying objects:
- “Project Blue Book? Wasn’t that about UFOs?” Nick could hardly believe what he was hearing.