"Roim sor Saine" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms propres en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De Roim, déformation de Roen (attesté circa 1135), sor, et Saine (variante de Seine)."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Rouen (ville)."
      ],
      "id": "fr-Roim_sor_Saine-fro-name-NBgB5NXd"
    }
  ],
  "word": "Roim sor Saine"
}

{
  "categories": [
    "Noms propres en ancien français",
    "ancien français"
  ],
  "etymology_texts": [
    "De Roim, déformation de Roen (attesté circa 1135), sor, et Saine (variante de Seine)."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Rouen (ville)."
      ]
    }
  ],
  "word": "Roim sor Saine"
}