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

Third-person singular simple present indicative form of book it

plural of by-book

plural of booke

Archaic spelling of book.

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

(obsolete) Full of book-knowledge; stuffed with ideas gleaned from books.

As much as a book holds.

(idiomatic) Finished; concluded; able to be regarded as a matter of record.

Contained in an official list (of members, employees, clients, projects etc.). / (business, accounting) Officially recorded in the financial records of a company or organization.