"late antiquity" meaning in English

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      "expansion": "late antiquity",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
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      "alt_of": [
        {
          "word": "Late Antiquity"
        }
      ],
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      "glosses": [
        "Alternative letter-case form of Late Antiquity"
      ],
      "id": "en-late_antiquity-en-name-PVj~vC0K",
      "links": [
        [
          "Late Antiquity",
          "Late Antiquity#English"
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      ],
      "tags": [
        "alt-of"
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    }
  ],
  "word": "late antiquity"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "late antiquity",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Late Antiquity"
        }
      ],
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        "English proper nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative letter-case form of Late Antiquity"
      ],
      "links": [
        [
          "Late Antiquity",
          "Late Antiquity#English"
        ]
      ],
      "tags": [
        "alt-of"
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    }
  ],
  "word": "late antiquity"
}