Enter a clue or pattern or both:
The Clue
It has precedents (8 letter answer)
The Answer
CASEBOOK
Tags
Notes
The answer CASEBOOK is so rare that it appears less than once every 2500 puzzles.
Definition
CASEBOOK as a noun:
1. a book in which detailed written records of a case are kept and which are a source of information for subsequent work
CASEBOOK as an adjective:
1. (casebook, textbook) = according to or characteristic of a casebook or textbook; typical; "a casebook schizophrenic"; "a textbook example"