red book
noun
Definitions
A book, often bound with a red cover, or online equivalent, that is an official, or canonical, collection of data, regulations, or writings.
Example: All the chauntry preestis whos composicions are enrolled in the rede boke. T. Smith & L. T. Smith Eng. Gilds (1479, ed. 1870, p. 419, cited after OED)
A book supposedly belonging to the devil and containing the signatures of those in league with him.