"plaigne" meaning in Old French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "plānum"
      },
      "expansion": "Latin plānum",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin plānum.",
  "forms": [
    {
      "form": "plaigne oblique singular or",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "plaignes",
      "tags": [
        "oblique",
        "plural"
      ]
    },
    {
      "form": "plaigne",
      "tags": [
        "nominative",
        "singular"
      ]
    },
    {
      "form": "plaignes",
      "tags": [
        "nominative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "plaigne oblique singular, f (oblique plural plaignes, nominative singular plaigne, nominative plural plaignes)",
      "name": "fro-noun"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "plain, flat area",
          "word": "plain"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Old French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old French undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Then the king descended downstream and took shelter in the plain below, atop the fountains that were there.",
          "ref": "c. 1220, Lancelot du Lac; republished as Heinrich Oskar Sommer, editor, The Vulgate Version of the Arthurian Romances […], volume 3, Le Livre de Lancelot del Lac, Part I, 1910, page 157:",
          "text": "Lors deschent li rois aual & se herberge en la plaigne desous sor les fontaines qui i sont.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of plain (“plain, flat area”)"
      ],
      "id": "en-plaigne-fro-noun-qf00yhMd",
      "links": [
        [
          "plain",
          "plain#Old_French"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "plaigne"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "plānum"
      },
      "expansion": "Latin plānum",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin plānum.",
  "forms": [
    {
      "form": "plaigne oblique singular or",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "plaignes",
      "tags": [
        "oblique",
        "plural"
      ]
    },
    {
      "form": "plaigne",
      "tags": [
        "nominative",
        "singular"
      ]
    },
    {
      "form": "plaignes",
      "tags": [
        "nominative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "plaigne oblique singular, f (oblique plural plaignes, nominative singular plaigne, nominative plural plaignes)",
      "name": "fro-noun"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "plain, flat area",
          "word": "plain"
        }
      ],
      "categories": [
        "Old French entries with incorrect language header",
        "Old French feminine nouns",
        "Old French lemmas",
        "Old French nouns",
        "Old French terms derived from Latin",
        "Old French terms with quotations",
        "Old French undefined derivations",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "Then the king descended downstream and took shelter in the plain below, atop the fountains that were there.",
          "ref": "c. 1220, Lancelot du Lac; republished as Heinrich Oskar Sommer, editor, The Vulgate Version of the Arthurian Romances […], volume 3, Le Livre de Lancelot del Lac, Part I, 1910, page 157:",
          "text": "Lors deschent li rois aual & se herberge en la plaigne desous sor les fontaines qui i sont.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of plain (“plain, flat area”)"
      ],
      "links": [
        [
          "plain",
          "plain#Old_French"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "plaigne"
}

{
  "called_from": "form_descriptions/1089",
  "msg": "suspicious unhandled suffix in Old French: 'plaigne oblique singular or', originally 'plaigne oblique singular or f'",
  "path": [
    "plaigne"
  ],
  "section": "Old French",
  "subsection": "noun",
  "title": "plaigne",
  "trace": ""
}

{
  "called_from": "form_descriptions/1089",
  "msg": "suspicious unhandled suffix in Old French: 'plaigne oblique singular or', originally 'plaigne oblique singular or f'",
  "path": [
    "plaigne"
  ],
  "section": "Old French",
  "subsection": "noun",
  "title": "plaigne",
  "trace": ""
}

{
  "called_from": "form_descriptions/1147",
  "msg": "suspicious related form tags ['feminine', 'canonical']: 'plaigne oblique singular or' in 'plaigne oblique singular, f (oblique plural plaignes, nominative singular plaigne, nominative plural plaignes)'",
  "path": [
    "plaigne"
  ],
  "section": "Old French",
  "subsection": "noun",
  "title": "plaigne",
  "trace": ""
}