Book  —n. 1 a written or printed work with pages bound along one side. B work intended for publication. 2 bound blank sheets for notes, records, etc. 3 bound set of tickets, stamps, matches, etc. 4 (in pl.) Set of records or accounts. 5 main division of a large literary work. 6 telephone directory. 7 colloq. Magazine. 8 libretto, script, etc. 9 record of bets. —v. 1 a (also absol.) Reserve (a seat etc.) In advance. B engage (an entertainer etc.). 2 a take the personal details of (an offender or rule-breaker). B enter in a book or list.  book in register at a hotel etc. Book up 1 buy tickets in advance. 2 (as booked up) with all places reserved. Bring to book call to account. Go by the book proceed by the rules. In a person's good (or bad) books in (or out of) favour with a person. [old english]