"small book" meaning in English

{
  "etymology_text": "Coined in the mid-20th century; a reference to the literal logbooks or \"small books\" officers use at the station.",
  "forms": [
    {
      "form": "small books",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "small book (plural small books)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "glosses": [
        "Synonym of logbook."
      ],
      "id": "en-small_book-en-noun-fdObhG2x",
      "links": [
        [
          "logbook",
          "logbook#English"
        ]
      ],
      "raw_glosses": [
        "(historical) Synonym of logbook."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "logbook"
        }
      ],
      "tags": [
        "historical"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Law",
          "orig": "en:Law",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "7 93",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "langcode": "en",
          "name": "Law enforcement",
          "orig": "en:Law enforcement",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              39,
              49
            ]
          ],
          "text": "a prisoner is being placed/held on the small book",
          "type": "example"
        }
      ],
      "glosses": [
        "A process by which someone is to be detained or held on investigation without an official charge being filed; suspects placed in it were routinely held incommunicado (denied phone calls and visitors) while detectives aggressively interrogated them for confessions without formally charging them."
      ],
      "id": "en-small_book-en-noun-rO82qHxi",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "detained",
          "detained"
        ],
        [
          "investigation",
          "investigation"
        ],
        [
          "incommunicado",
          "incommunicado"
        ],
        [
          "aggressively",
          "aggressively"
        ],
        [
          "interrogated",
          "interrogated"
        ],
        [
          "confessions",
          "confessions"
        ],
        [
          "formally",
          "formally"
        ],
        [
          "charging",
          "charging"
        ]
      ],
      "raw_glosses": [
        "(archaic, law) A process by which someone is to be detained or held on investigation without an official charge being filed; suspects placed in it were routinely held incommunicado (denied phone calls and visitors) while detectives aggressively interrogated them for confessions without formally charging them."
      ],
      "tags": [
        "archaic"
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "small book"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Law enforcement"
  ],
  "etymology_text": "Coined in the mid-20th century; a reference to the literal logbooks or \"small books\" officers use at the station.",
  "forms": [
    {
      "form": "small books",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "small book (plural small books)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with historical senses"
      ],
      "glosses": [
        "Synonym of logbook."
      ],
      "links": [
        [
          "logbook",
          "logbook#English"
        ]
      ],
      "raw_glosses": [
        "(historical) Synonym of logbook."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "logbook"
        }
      ],
      "tags": [
        "historical"
      ]
    },
    {
      "categories": [
        "English terms with archaic senses",
        "English terms with usage examples",
        "en:Law"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              39,
              49
            ]
          ],
          "text": "a prisoner is being placed/held on the small book",
          "type": "example"
        }
      ],
      "glosses": [
        "A process by which someone is to be detained or held on investigation without an official charge being filed; suspects placed in it were routinely held incommunicado (denied phone calls and visitors) while detectives aggressively interrogated them for confessions without formally charging them."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "detained",
          "detained"
        ],
        [
          "investigation",
          "investigation"
        ],
        [
          "incommunicado",
          "incommunicado"
        ],
        [
          "aggressively",
          "aggressively"
        ],
        [
          "interrogated",
          "interrogated"
        ],
        [
          "confessions",
          "confessions"
        ],
        [
          "formally",
          "formally"
        ],
        [
          "charging",
          "charging"
        ]
      ],
      "raw_glosses": [
        "(archaic, law) A process by which someone is to be detained or held on investigation without an official charge being filed; suspects placed in it were routinely held incommunicado (denied phone calls and visitors) while detectives aggressively interrogated them for confessions without formally charging them."
      ],
      "tags": [
        "archaic"
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "word": "small book"
}