the book

Definition of the book

US, informal
1 :the knowledge or information that relates to a particular subject, person, etc.
  • The book on him is that he can't hit a curveball.
2 :a book that lists the names, addresses, and phone numbers of the people and businesses in a certain area :telephone book
  • Give me a call if you need to. I'm in the book.

Word by Word Definitions

book play
  1. : a set of written sheets of skin or paper or tablets of wood or ivory

  2. : a set of written, printed, or blank sheets bound together between a front and back cover

  3. : a long written or printed literary composition

  1. : derived from books (see 1book 1) and not from practical experience

  2. : shown by ledgers

  1. : to register (something, such as a name) for some future activity or condition (as to engage transportation or reserve lodgings)

  2. : to schedule engagements for

  3. : to set aside time for


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