"A. O." meaning in French

{
  "head_templates": [
    {
      "args": {},
      "expansion": "A. O. ?",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(East Africa), used as an overprint on stamps of Belgian Congo in 1918 for use in Belgian occupied German East Africa",
          "word": "Afrique orientale"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "fr",
          "name": "Overprints",
          "orig": "fr:Overprints",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Afrique orientale (East Africa), used as an overprint on stamps of Belgian Congo in 1918 for use in Belgian occupied German East Africa"
      ],
      "id": "en-A._O.-fr-name-FULh5Nna",
      "links": [
        [
          "Afrique orientale",
          "Afrique orientale#French"
        ],
        [
          "Belgian Congo",
          "Belgian Congo"
        ],
        [
          "German East Africa",
          "German East Africa"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "A. O."
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "A. O. ?",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(East Africa), used as an overprint on stamps of Belgian Congo in 1918 for use in Belgian occupied German East Africa",
          "word": "Afrique orientale"
        }
      ],
      "categories": [
        "French entries with incorrect language header",
        "French initialisms",
        "French lemmas",
        "French links with redundant wikilinks",
        "French multiword terms",
        "French proper nouns",
        "French terms spelled with .",
        "Requests for gender in French entries",
        "fr:Geographic abbreviations",
        "fr:Overprints"
      ],
      "glosses": [
        "Initialism of Afrique orientale (East Africa), used as an overprint on stamps of Belgian Congo in 1918 for use in Belgian occupied German East Africa"
      ],
      "links": [
        [
          "Afrique orientale",
          "Afrique orientale#French"
        ],
        [
          "Belgian Congo",
          "Belgian Congo"
        ],
        [
          "German East Africa",
          "German East Africa"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "A. O."
}