"Seint Graal" meaning in Middle English

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "en",
            "2": "Sangrail"
          },
          "expansion": "English: Sangrail",
          "name": "desc"
        }
      ],
      "text": "English: Sangrail"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "enm",
        "2": "fro",
        "3": "saint graal"
      },
      "expansion": "Old French saint graal",
      "name": "bor"
    },
    {
      "args": {
        "1": "enm",
        "2": "seint",
        "3": "graal"
      },
      "expansion": "seint + graal",
      "name": "af"
    }
  ],
  "etymology_text": "Borrowed from Old French saint graal, saint greal (“Holy Grail”); equivalent to seint + graal.",
  "forms": [
    {
      "form": "sangrayle",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Sankegreal",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Sankgreall",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "sengreal",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Seyn Greall",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Seynt Graal",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "proper noun",
        "head": "Seint Graal"
      },
      "expansion": "Seint Graal",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "_dis": "80 20",
          "kind": "other",
          "name": "Middle English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "78 22",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "92 8",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "90 10",
          "kind": "topical",
          "langcode": "enm",
          "name": "Containers",
          "orig": "enm:Containers",
          "parents": [
            "Tools",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The Holy Grail; Sangrail."
      ],
      "id": "en-Seint_Graal-enm-name-EfwKcwuz",
      "links": [
        [
          "Holy Grail",
          "Holy Grail"
        ],
        [
          "Sangrail",
          "Sangrail"
        ]
      ]
    },
    {
      "categories": [],
      "glosses": [
        "The book of the Grail."
      ],
      "id": "en-Seint_Graal-enm-name-6OA5UKgV",
      "raw_glosses": [
        "(rare) The book of the Grail."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌsɛi̯ntˈɡraːl/"
    },
    {
      "ipa": "/ˌsanˈɡraːl/"
    },
    {
      "ipa": "/ˌsɛnˈɡraːl/"
    }
  ],
  "word": "Seint Graal"
}

{
  "categories": [
    "Middle English compound terms",
    "Middle English entries with incorrect language header",
    "Middle English lemmas",
    "Middle English multiword terms",
    "Middle English proper nouns",
    "Middle English terms borrowed from Old French",
    "Middle English terms derived from Old French",
    "Pages with 1 entry",
    "Pages with entries",
    "enm:Containers"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "en",
            "2": "Sangrail"
          },
          "expansion": "English: Sangrail",
          "name": "desc"
        }
      ],
      "text": "English: Sangrail"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "enm",
        "2": "fro",
        "3": "saint graal"
      },
      "expansion": "Old French saint graal",
      "name": "bor"
    },
    {
      "args": {
        "1": "enm",
        "2": "seint",
        "3": "graal"
      },
      "expansion": "seint + graal",
      "name": "af"
    }
  ],
  "etymology_text": "Borrowed from Old French saint graal, saint greal (“Holy Grail”); equivalent to seint + graal.",
  "forms": [
    {
      "form": "sangrayle",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Sankegreal",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Sankgreall",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "sengreal",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Seyn Greall",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "Seynt Graal",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "proper noun",
        "head": "Seint Graal"
      },
      "expansion": "Seint Graal",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "name",
  "senses": [
    {
      "glosses": [
        "The Holy Grail; Sangrail."
      ],
      "links": [
        [
          "Holy Grail",
          "Holy Grail"
        ],
        [
          "Sangrail",
          "Sangrail"
        ]
      ]
    },
    {
      "categories": [
        "Middle English terms with rare senses"
      ],
      "glosses": [
        "The book of the Grail."
      ],
      "raw_glosses": [
        "(rare) The book of the Grail."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌsɛi̯ntˈɡraːl/"
    },
    {
      "ipa": "/ˌsanˈɡraːl/"
    },
    {
      "ipa": "/ˌsɛnˈɡraːl/"
    }
  ],
  "word": "Seint Graal"
}