I. ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: case (I) + book
: a book containing records of cases illustrative of general principles or typifying significant situations that is used for reference and instruction (as in law, medicine, sociology, or psychiatry)
II. noun
: a compilation of primary and secondary documents relating to a central topic together with scholarly comment, exercises, and study aids that is often designed to serve as a source book for short papers (as in a course in composition) or as a point of departure for a research paper