Definition of "open book" []

• Something of which salient aspects are obvious or easily interpreted. (noun)
• A person who through naivete responds candidly to questions or openly displays their emotions or intentions. (noun)
• An open book decomposition. (noun)

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• "It shows a golden-garbed Magdalene kneeling in prayer, an open book before her and a skull by her knees."
• "An open book with the Greek letters AΩ represents Christ see Initials."
• "Indeed, I'm sure that my life's ambitions would have been an open book to her by the time that the joint arrived, had not Jack Ives, who was sitting on the lady's other side, cut into the conversation just as Mrs. Wentworth was comparing my early struggles with those of Mr. Carlyle."