"endyng day" meaning in Middle English

{
  "etymology_templates": [
    {
      "args": {
        "1": "enm",
        "2": "endyng",
        "3": "day"
      },
      "expansion": "endyng + day",
      "name": "af"
    }
  ],
  "etymology_text": "From endyng + day.",
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "noun"
      },
      "expansion": "endyng day",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle 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"
        },
        {
          "kind": "topical",
          "langcode": "enm",
          "name": "Death",
          "orig": "enm:Death",
          "parents": [
            "Body",
            "Life",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "enm",
          "name": "Time",
          "orig": "enm:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The day which one dies on; one's deathday."
      ],
      "id": "en-endyng_day-enm-noun-XoYpdbRr",
      "links": [
        [
          "deathday",
          "deathday"
        ]
      ],
      "synonyms": [
        {
          "word": "ende-day"
        },
        {
          "word": "endingday"
        },
        {
          "word": "ending day"
        },
        {
          "word": "ending dai"
        },
        {
          "word": "endyng-day"
        },
        {
          "word": "endyng daye"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɛːndinɡ(ə)dæi̯/"
    },
    {
      "ipa": "/ˈɛndinɡ(ə)dæi̯/"
    }
  ],
  "word": "endyng day"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "enm",
        "2": "endyng",
        "3": "day"
      },
      "expansion": "endyng + day",
      "name": "af"
    }
  ],
  "etymology_text": "From endyng + day.",
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "noun"
      },
      "expansion": "endyng day",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Middle English compound terms",
        "Middle English entries with incorrect language header",
        "Middle English lemmas",
        "Middle English multiword terms",
        "Middle English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "enm:Death",
        "enm:Time"
      ],
      "glosses": [
        "The day which one dies on; one's deathday."
      ],
      "links": [
        [
          "deathday",
          "deathday"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɛːndinɡ(ə)dæi̯/"
    },
    {
      "ipa": "/ˈɛndinɡ(ə)dæi̯/"
    }
  ],
  "synonyms": [
    {
      "word": "ende-day"
    },
    {
      "word": "endingday"
    },
    {
      "word": "ending day"
    },
    {
      "word": "ending dai"
    },
    {
      "word": "endyng-day"
    },
    {
      "word": "endyng daye"
    }
  ],
  "word": "endyng day"
}