Open book

The phrase "Open book" can have both literal and figurative meanings: 1. Literal meaning: When a book is physically open, it implies that its pages are not closed or covered, allowing the reader to see the contents easily. 2. Figurative meaning: When someone or something is referred to as an "open book," it means that they are perceived as easily understandable, transparent, or clear. This phrase commonly describes a person who is honest, open-minded, and willing to share their thoughts, feelings, or personal information readily with others. Additionally, the phrase can also refer to situations or issues that are uncomplicated or easy to comprehend.