"datebook" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "date",
        "3": "book"
      },
      "expansion": "date + book",
      "name": "compound"
    }
  ],
  "etymology_text": "From date + book.",
  "forms": [
    {
      "form": "datebooks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "datebook (plural datebooks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007 May 1, Joe Brescia, “The Fountain of Youth Is as Near as the Next Party”, in New York Times:",
          "text": "Mr. Peimer fills his datebook with invitations from seemingly endless mailing and e-mail lists, faxes, phone calls and by being the friend of a friend.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A book in which appointments are kept, each listed beside the day when it occurs."
      ],
      "id": "en-datebook-en-noun-TVe9E-zy",
      "links": [
        [
          "appointment",
          "appointment"
        ],
        [
          "day",
          "day"
        ]
      ]
    }
  ],
  "word": "datebook"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "date",
        "3": "book"
      },
      "expansion": "date + book",
      "name": "compound"
    }
  ],
  "etymology_text": "From date + book.",
  "forms": [
    {
      "form": "datebooks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "datebook (plural datebooks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2007 May 1, Joe Brescia, “The Fountain of Youth Is as Near as the Next Party”, in New York Times:",
          "text": "Mr. Peimer fills his datebook with invitations from seemingly endless mailing and e-mail lists, faxes, phone calls and by being the friend of a friend.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A book in which appointments are kept, each listed beside the day when it occurs."
      ],
      "links": [
        [
          "appointment",
          "appointment"
        ],
        [
          "day",
          "day"
        ]
      ]
    }
  ],
  "word": "datebook"
}