"know like a book" meaning in English

{
  "forms": [
    {
      "form": "knows like a book",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "knowing like a book",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "knew like a book",
      "tags": [
        "past"
      ]
    },
    {
      "form": "known like a book",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "know<,,knew,known> like a book"
      },
      "expansion": "know like a book (third-person singular simple present knows like a book, present participle knowing like a book, simple past knew like a book, past participle known like a book)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English similes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1851, T. S. Arthur, “That John Mason”, in Off-Hand Sketches:",
          "text": "\"He's a bad man, that John Mason, and my advice to you and to every one, is to keep clear of him. I know him like a book.\"",
          "type": "quote"
        },
        {
          "ref": "1939 June 21, “Slayer Still Free in Woods”, in Leader Post, Saskatchewan, Canada, retrieved 2013-11-18, page 9:",
          "text": "\"Olson can hide out around here until the snow flies if he wants to. He knows these woods—every steam and lake—like a book.\"",
          "type": "quote"
        },
        {
          "ref": "1998 March 22, Dave Anderson, “College Basketball: When Sherman White Threw It All Away”, in New York Times, retrieved 2013-11-18:",
          "text": "\"I played with the guy seven days a week; I knew him like a book.\"",
          "type": "quote"
        },
        {
          "ref": "2010, Bill Ratcliffe, Liz, →ISBN, page 24:",
          "text": "\"Around here I know the shoreline like a book.\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "To have an extensive and penetrating understanding of (something or someone)."
      ],
      "id": "en-know_like_a_book-en-verb-0d41t0Gw",
      "links": [
        [
          "extensive",
          "extensive"
        ],
        [
          "penetrating",
          "penetrating"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(transitive, simile) To have an extensive and penetrating understanding of (something or someone)."
      ],
      "related": [
        {
          "word": "read like a book"
        }
      ],
      "synonyms": [
        {
          "word": "know inside and out"
        },
        {
          "word": "know like the back of one's hand"
        }
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-know like a book.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c0/En-au-know_like_a_book.ogg/En-au-know_like_a_book.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/c/c0/En-au-know_like_a_book.ogg"
    }
  ],
  "word": "know like a book"
}

{
  "forms": [
    {
      "form": "knows like a book",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "knowing like a book",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "knew like a book",
      "tags": [
        "past"
      ]
    },
    {
      "form": "known like a book",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "know<,,knew,known> like a book"
      },
      "expansion": "know like a book (third-person singular simple present knows like a book, present participle knowing like a book, simple past knew like a book, past participle known like a book)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "read like a book"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English similes",
        "English terms with quotations",
        "English transitive verbs",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1851, T. S. Arthur, “That John Mason”, in Off-Hand Sketches:",
          "text": "\"He's a bad man, that John Mason, and my advice to you and to every one, is to keep clear of him. I know him like a book.\"",
          "type": "quote"
        },
        {
          "ref": "1939 June 21, “Slayer Still Free in Woods”, in Leader Post, Saskatchewan, Canada, retrieved 2013-11-18, page 9:",
          "text": "\"Olson can hide out around here until the snow flies if he wants to. He knows these woods—every steam and lake—like a book.\"",
          "type": "quote"
        },
        {
          "ref": "1998 March 22, Dave Anderson, “College Basketball: When Sherman White Threw It All Away”, in New York Times, retrieved 2013-11-18:",
          "text": "\"I played with the guy seven days a week; I knew him like a book.\"",
          "type": "quote"
        },
        {
          "ref": "2010, Bill Ratcliffe, Liz, →ISBN, page 24:",
          "text": "\"Around here I know the shoreline like a book.\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "To have an extensive and penetrating understanding of (something or someone)."
      ],
      "links": [
        [
          "extensive",
          "extensive"
        ],
        [
          "penetrating",
          "penetrating"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(transitive, simile) To have an extensive and penetrating understanding of (something or someone)."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-know like a book.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c0/En-au-know_like_a_book.ogg/En-au-know_like_a_book.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/c/c0/En-au-know_like_a_book.ogg"
    }
  ],
  "synonyms": [
    {
      "word": "know inside and out"
    },
    {
      "word": "know like the back of one's hand"
    }
  ],
  "word": "know like a book"
}