"þridde" meaning in Old English

{
  "head_templates": [
    {
      "args": {
        "1": "ang",
        "2": "numeral",
        "head": "þridde"
      },
      "expansion": "þridde",
      "name": "head"
    }
  ],
  "lang": "Old English",
  "lang_code": "ang",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "third",
          "word": "þridda"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Old English 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"
        }
      ],
      "examples": [
        {
          "english": "The night has seven parts... Third is conticinium, when all things become silent in their rest...",
          "roman": "Seo niht hæfð seofon dǣlas.. þridde is conticinium þonne ealle þing sweowiað on hyra reste...",
          "text": "Bede, Leechdoms, III, 242",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of þridda: third"
      ],
      "id": "en-þridde-ang-num-zteowuLi",
      "links": [
        [
          "þridda",
          "þridda#Old_English"
        ],
        [
          "third",
          "third"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈθrid.de/"
    }
  ],
  "word": "þridde"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ang",
        "2": "numeral",
        "head": "þridde"
      },
      "expansion": "þridde",
      "name": "head"
    }
  ],
  "lang": "Old English",
  "lang_code": "ang",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "third",
          "word": "þridda"
        }
      ],
      "categories": [
        "Old English entries with incorrect language header",
        "Old English lemmas",
        "Old English numerals",
        "Old English terms with IPA pronunciation",
        "Old English terms with quotations",
        "Old English terms with redundant head parameter",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "The night has seven parts... Third is conticinium, when all things become silent in their rest...",
          "roman": "Seo niht hæfð seofon dǣlas.. þridde is conticinium þonne ealle þing sweowiað on hyra reste...",
          "text": "Bede, Leechdoms, III, 242",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of þridda: third"
      ],
      "links": [
        [
          "þridda",
          "þridda#Old_English"
        ],
        [
          "third",
          "third"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈθrid.de/"
    }
  ],
  "word": "þridde"
}