"Sabbatum" meaning in Latin

{
  "forms": [
    {
      "form": "Sabbatī",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "Sabbatum<2.both>"
      },
      "expansion": "Sabbatum n (genitive Sabbatī); second declension",
      "name": "la-noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Saturday",
          "word": "sabbatum"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin neuter nouns in the second declension",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative letter-case form of sabbatum (“Saturday”)"
      ],
      "id": "en-Sabbatum-la-noun-63Jp2bJu",
      "links": [
        [
          "sabbatum",
          "sabbatum#Latin"
        ]
      ],
      "tags": [
        "alt-of",
        "declension-2",
        "neuter"
      ]
    }
  ],
  "word": "Sabbatum"
}

{
  "forms": [
    {
      "form": "Sabbatī",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "Sabbatum<2.both>"
      },
      "expansion": "Sabbatum n (genitive Sabbatī); second declension",
      "name": "la-noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Saturday",
          "word": "sabbatum"
        }
      ],
      "categories": [
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin neuter nouns",
        "Latin neuter nouns in the second declension",
        "Latin nouns",
        "Latin nouns with red links in their inflection tables",
        "Latin second declension nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative letter-case form of sabbatum (“Saturday”)"
      ],
      "links": [
        [
          "sabbatum",
          "sabbatum#Latin"
        ]
      ],
      "tags": [
        "alt-of",
        "declension-2",
        "neuter"
      ]
    }
  ],
  "word": "Sabbatum"
}