"naaltsoos biniiʼ" meaning in Navajo

{
  "etymology_text": "naaltsoos (“book”) + bi- (“its”) + aniiʼ (“face”)",
  "head_templates": [
    {
      "args": {
        "1": "nv",
        "2": "noun",
        "head": "naaltsoos biniiʼ"
      },
      "expansion": "naaltsoos biniiʼ",
      "name": "head"
    }
  ],
  "lang": "Navajo",
  "lang_code": "nv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Navajo 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"
        },
        {
          "kind": "topical",
          "langcode": "nv",
          "name": "Websites",
          "orig": "nv:Websites",
          "parents": [
            "World Wide Web",
            "Internet",
            "Computing",
            "Networking",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Facebook"
      ],
      "id": "en-naaltsoos_biniiʼ-nv-noun-1B9bSXfu",
      "links": [
        [
          "Facebook",
          "Facebook"
        ]
      ],
      "synonyms": [
        {
          "word": "naaltsoos aniiʼ"
        }
      ],
      "wikipedia": [
        "nv:naaltsoos biniiʼ"
      ]
    }
  ],
  "word": "naaltsoos biniiʼ"
}

{
  "etymology_text": "naaltsoos (“book”) + bi- (“its”) + aniiʼ (“face”)",
  "head_templates": [
    {
      "args": {
        "1": "nv",
        "2": "noun",
        "head": "naaltsoos biniiʼ"
      },
      "expansion": "naaltsoos biniiʼ",
      "name": "head"
    }
  ],
  "lang": "Navajo",
  "lang_code": "nv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Navajo entries with incorrect language header",
        "Navajo lemmas",
        "Navajo multiword terms",
        "Navajo nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "nv:Websites"
      ],
      "glosses": [
        "Facebook"
      ],
      "links": [
        [
          "Facebook",
          "Facebook"
        ]
      ],
      "wikipedia": [
        "nv:naaltsoos biniiʼ"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "naaltsoos aniiʼ"
    }
  ],
  "word": "naaltsoos biniiʼ"
}