textbook /ˈtɛkst.bʊk/adjective 4noun 1forms 3phrases 1 adjective4 •Of or pertaining to textbooks or their style, especially in being dry and pedagogical; textbooky, textbooklike.These figures are just too textbook, or papyrus-like, as if this information came off of a shelf in the Library of Alexandria — 2011 •(figurative) Having the typical characteristics of some class of phenomenon, so that it might be included as an example in a textbook.Every night had been clear and star-studded, the progression of the moon through its phases absolutely textbook, its dance with the planets visible in the ecliptic... — 2003 •(figurative) Done exactly correctly, in an exemplary way that might be described in a textbook.Well done everyone, the tree fell exactly where we planned. That was textbook. •Learned from, or as if learned from, a textbook, as opposed to personal discovery or experience.He has a textbook understanding of company law but no practical experience of litigation. noun1 •A coursebook, a formal manual of instruction in a specific subject, especially one for use in schools or colleges. formstextbooks · more textbook · most textbook Phrases with textbook textbook caseA real-life case that matches a theory perfectly, a perfect example.