"A number" meaning in All languages combined

{
  "forms": [
    {
      "form": "A numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "A number (plural A numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "identification number for immigrants",
          "word": "alien registration number"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of alien registration number (“identification number for immigrants”)."
      ],
      "id": "en-A_number-en-noun-zvY2-H1b",
      "links": [
        [
          "alien",
          "alien#English"
        ],
        [
          "registration",
          "registration#English"
        ],
        [
          "number",
          "number#English"
        ]
      ],
      "raw_glosses": [
        "(US) Abbreviation of alien registration number (“identification number for immigrants”)."
      ],
      "tags": [
        "US",
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "A number"
}

{
  "forms": [
    {
      "form": "A numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "A number (plural A numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "identification number for immigrants",
          "word": "alien registration number"
        }
      ],
      "categories": [
        "American English",
        "English abbreviations",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "Abbreviation of alien registration number (“identification number for immigrants”)."
      ],
      "links": [
        [
          "alien",
          "alien#English"
        ],
        [
          "registration",
          "registration#English"
        ],
        [
          "number",
          "number#English"
        ]
      ],
      "raw_glosses": [
        "(US) Abbreviation of alien registration number (“identification number for immigrants”)."
      ],
      "tags": [
        "US",
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "A number"
}