A book used in schools or colleges for the formal study of a subject, A coursebook, a formal manual of instruction in a specific subject, especially one for use in schools or colleges, adjective_ Of or pertaining to textbooks or their style, especially in being dry and pedagogical; textbooky, textbooklike, Having the typical characteristics of some class of phenomenon, so that it might be included as an example in a textbook, Being a characteristic example of its kind; classic