A collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc.

(transitive) To reserve (something) for future use. / (transitive) To write down, to register or record in a book or as in a book.

(UK dialectal, Northern England) simple past tense of bake

(idiomatic) In a manner which adheres strictly to rules, legal requirements, or official procedures.

present participle of book

The act or process of writing something down in a book or books, e.g. in accounting. / A reservation for a service, such as travel or hotel accommodation.

(idiomatic) Adhering strictly to rules, legal requirements, or official procedures.

(slang) To take off quickly; to leave in a hurry.

A notebook or memorandum book. / A subordinate book containing notes or jottings to be afterward extended in due form.

(intransitive, idiomatic) To check in (to a hotel). / (transitive) To reserve an appointment for.