Definition:
A "book of facts" is a noun that refers to a book containing true information or data about various topics. People use it to find reliable and accurate details.
In more advanced contexts, a "book of facts" may refer to specialized reference books, such as encyclopedias, almanacs, or atlases, which provide detailed information about specific subjects or data.
"By the book": This means to do something strictly according to the rules or guidelines, similar to how one would refer to a book of facts for accurate information.
"Read between the lines": This means to understand something that is not directly stated but implied. It’s not directly related to a "book of facts," but it highlights the importance of interpreting information carefully.
A "book of facts" is a reliable source of information that you can refer to when you need accurate data.