"-our" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Dates manquantes en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en ancien français issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Siècle à préciser) Du latin -or."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "-eur"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en ancien français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Variante de -eur."
      ],
      "id": "fr--our-fro-noun-~84v2OpL",
      "tags": [
        "alt-of"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "-our"
}

{
  "categories": [
    "Dates manquantes en ancien français",
    "Mots en ancien français issus d’un mot en latin",
    "Noms communs en ancien français",
    "ancien français"
  ],
  "etymology_texts": [
    "(Siècle à préciser) Du latin -or."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "-eur"
        }
      ],
      "categories": [
        "Wiktionnaire:Exemples manquants en ancien français"
      ],
      "glosses": [
        "Variante de -eur."
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "-our"
}